http://blog.gmane.org/gmane.linux.ports.ppc.embedded hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50749 <pre>We have a system with linux 2.6.32 and the somewhat archaic uClibc 0.9.27 (but I'm not sure the current version is any better, and I think there are binary compatibility if we update). I've just discovered that pread() is 'implemented' by using 3 lseek() system calls and read(). (the same is true for the 64bit versions). I thought that pread() was supposed to be atomic (so usable concurrently by multiple threads) which means that this implementation is completely broken. I've not looked to see what glibc does. I can see that part of the problem is the alignment of the 64bit value on the argument list of syscall() (when the register save area is cast to a sycall argument structure). But it also looks as though the uClibc syscall() stub can only pass 5 arguments in registers, and pread() (with an aligned 64bit offset) requires 6. The ucLibc source seems to be predicated by __NR_pread, but if that were defined it would try to call __syscall_pread() and I can't find that anywhere. A special pread/pwrite as</pre> David Laight 2012-05-25T13:29:06 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50743 <pre>Hi, let's assume a module gets loaded into an already busy system, and the ".init.text" section with the __init function gets loaded into one memory region, and the normal ".text" section gets loaded into a totally different memory region. Now assume that both regions are &gt;32MB apart in addressing, so that a call from the __init .init.text function to any function in .text requires a trampoline as set up by the do_plt_call() function in arch/kernel/module*.c So far so good for user code. Now assume that the __init function is not trivial and will require register save/restore functions in prologue/epilogue with such calls generated by gcc, e.g., the __init function calls _rest32gpr_28_x() in the epilogue. This restore functions however is in the .text section due to the static link of the normal libs. Now we have the __init function calling the trampoline, which is destroying r11. The trampoline is then jumping to the register restore function which relies on r11 still being intact, which it now isn't any</pre> Wrobel Heinz-R39252 2012-05-24T20:05:19 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50734 <pre>From: Tang Yuantian &lt;Yuantian.Tang&lt; at &gt;freescale.com&gt; Signed-off-by: Jin Qing &lt;b24347&lt; at &gt;freescale.com&gt; Signed-off-by: Li Yang &lt;leoli&lt; at &gt;freescale.com&gt; Signed-off-by: Tang Yuantian &lt;Yuantian.Tang&lt; at &gt;freescale.com&gt; --- arch/powerpc/boot/dts/p1024rdb.dtsi | 228 ++++++++++++++++++++++++++++++++ arch/powerpc/boot/dts/p1024rdb_32b.dts | 87 ++++++++++++ arch/powerpc/boot/dts/p1024rdb_36b.dts | 87 ++++++++++++ 3 files changed, 402 insertions(+), 0 deletions(-) create mode 100644 arch/powerpc/boot/dts/p1024rdb.dtsi create mode 100644 arch/powerpc/boot/dts/p1024rdb_32b.dts create mode 100644 arch/powerpc/boot/dts/p1024rdb_36b.dts diff --git a/arch/powerpc/boot/dts/p1024rdb.dtsi b/arch/powerpc/boot/dts/p1024rdb.dtsi new file mode 100644 index 0000000..b05dcb4 --- /dev/null +++ b/arch/powerpc/boot/dts/p1024rdb.dtsi &lt; at &gt;&lt; at &gt; -0,0 +1,228 &lt; at &gt;&lt; at &gt; +/* + * P1024 RDB Device Tree Source stub (no addresses or top-level ranges) + * + * Copyright 2012 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary form</pre> b29983< at >freescale.com 2012-05-24T09:08:27 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50733 <pre>Hello, colleagues, I'm trying to enable an AGP slot (again) on my Maple board (dual PPC970FX board, with CPC925 (U3H) north bridge). For now I'm stuck with a problem: I use radeon card, drm-radeon driver with KMS. If I force drm-radeon to think about a card as about PCI card (by commenting corresponding lines in drm_radeon_kms.c), everything works, I get framebuffer, working X11, etc. If I enable agpgart-uninorth driver and RADEON_IS_AGP flag in drm driver, I get an Oops early during the bootstrap. Relevant part of the log (I can send full dmesg of normal bootstrap or this oops on request, if that would help). [ 2.820647] Linux agpgart interface v0.103 [ 2.824909] agpgart-uninorth 0000:f0:0b.0: Apple U3H chipset [ 2.830668] agpgart-uninorth 0000:f0:0b.0: Found device u3, rev 35 [ 2.843611] agpgart-uninorth 0000:f0:0b.0: configuring for size idx: 64 [ 2.850638] agpgart-uninorth 0000:f0:0b.0: AGP aperture is 256M &lt; at &gt; 0x0 [ 2.857646] [drm] Initialized drm 1.1.0 20060810 [ 2.862567</pre> Dmitry Eremin-Solenikov 2012-05-24T06:18:55 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50729 <pre>Here's what I put in my "for-3.6" branch for now. We can still change it, so let me know if you see any problems. I reworked the changelogs, changed the notification function name per Jesse, folded the one-line pcibios_setup_bus_notifier() into the only caller (on microblaze), and changed it from __devinit to __init (on powerpc) since it now has nothing to do with hotplug. Thank you very much for doing this work, Matsumoto-san. I hope to eventually get rid of pcibios_fixup_bus() altogether, and this is a significant step in that direction. Bjorn --- Hiroo Matsumoto (2): powerpc/PCI: move DMA &amp; IRQ init to device_add() notification path microblaze/PCI: move DMA &amp; IRQ init to device_add() notification path arch/microblaze/include/asm/pci.h | 1 arch/microblaze/pci/pci-common.c | 62 +++++++++++--------- arch/powerpc/include/asm/pci.h | 2 - arch/powerpc/kernel/pci-common.c | 87 ++++++++++++++-------------- arch/powerpc/kernel/pci_32.c </pre> Bjorn Helgaas 2012-05-23T22:36:55 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50726 <pre>Add EEPROM to the P1010RDB device tree. The 24c01 acts as a memory SPD so it shouldn't be overwritten without care. The 24c256 is a general purpose memory. Signed-off-by: Gustavo Zacarias &lt;gustavo&lt; at &gt;zacarias.com.ar&gt; --- arch/powerpc/boot/dts/p1010rdb.dtsi | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/boot/dts/p1010rdb.dtsi b/arch/powerpc/boot/dts/p1010rdb.dtsi index 4977614..ec7c27a 100644 --- a/arch/powerpc/boot/dts/p1010rdb.dtsi +++ b/arch/powerpc/boot/dts/p1010rdb.dtsi &lt; at &gt;&lt; at &gt; -126,12 +126,24 &lt; at &gt;&lt; at &gt; &amp;board_soc { i2c&lt; at &gt;3000 { +eeprom&lt; at &gt;50 { +compatible = "st,24c256"; +reg = &lt;0x50&gt;; +}; + rtc&lt; at &gt;68 { compatible = "pericom,pt7c4338"; reg = &lt;0x68&gt;; }; }; +i2c&lt; at &gt;3100 { +eeprom&lt; at &gt;52 { +compatible = "atmel,24c01"; +reg = &lt;0x52&gt;; +}; +}; + spi&lt; at &gt;7000 { flash&lt; at &gt;0 { #address-cells = &lt;1&gt;; </pre> Gustavo Zacarias 2012-05-23T14:35:18 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50725 <pre> irq_entry, irq_exit, timer_interrupt_entry and timer_interrupt_exit all do the same thing so use DECLARE_EVENT_CLASS to avoid duplicating everything 4 times. This saves quite a lot of space in both instruction text and data: text data bss dec hex filename 9265 19622 16 28903 70e7 arch/powerpc/kernel/irq.o 6817 19019 16 25852 64fc arch/powerpc/kernel/irq.o Signed-off-by: Anton Blanchard &lt;anton&lt; at &gt;samba.org&gt; --- Index: linux-build/arch/powerpc/include/asm/trace.h =================================================================== --- linux-build.orig/arch/powerpc/include/asm/trace.h2012-05-23 13:30:51.235534219 +1000 +++ linux-build/arch/powerpc/include/asm/trace.h2012-05-23 14:10:44.406639628 +1000 &lt; at &gt;&lt; at &gt; -8,7 +8,7 &lt; at &gt;&lt; at &gt; struct pt_regs; -TRACE_EVENT(irq_entry, +DECLARE_EVENT_CLASS(ppc64_interrupt_class, TP_PROTO(struct pt_regs *regs), &lt; at &gt;&lt; at &gt; -25,55 +25,32 &lt; at &gt;&lt; at &gt; TRACE_EVENT(irq_entry, TP_printk("pt_regs=%p", __entry-&gt;regs) ); -TRACE_EVENT(irq_exit, +DEFINE_</pre> Anton Blanchard 2012-05-23T04:47:48 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50723 <pre> When looking through some instruction traces I noticed our tracepoint checks were inline. It turns out we don't have CONFIG_JUMP_LABEL enabled. By enabling CONFIG_JUMP_LABEL we replace a load/compare/branch with a nop at every tracepoint call. For example in do_IRQ: CONFIG_JUMP_LABEL disabled: stdx 3,11,9 lwz 0,8(29) cmpwi 7,0,0 bne- 7,.L124 bl .irq_enter CONFIG_JUMP_LABEL enabled: stdx 3,11,9 nop bl .irq_enter Signed-off-by: Anton Blanchard &lt;anton&lt; at &gt;samba.org&gt; --- Index: linux-build/arch/powerpc/configs/ppc64_defconfig =================================================================== --- linux-build.orig/arch/powerpc/configs/ppc64_defconfig2012-04-05 13:47:45.691857096 +1000 +++ linux-build/arch/powerpc/configs/ppc64_defconfig2012-05-23 13:14:04.254270594 +1000 &lt; at &gt;&lt; at &gt; -16,6 +16,7 &lt; at &gt;&lt; at &gt; CONFIG_BLK_DEV_INITRD=y CONFIG_PROFILING=y CONFIG_OPROFILE=y CONFIG_KPROBES=y +CONFIG_JUMP_LABEL=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_M</pre> Anton Blanchard 2012-05-23T03:58:41 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50722 <pre>Hi Folks ! I'm going to be getting some surgery next week. In the good case, I should be officially back to work 2 weeks later, but I might end up being unavailable for longer. So while I'm away, Michael Ellerman and Paul Mackerras are going to take care of the powerpc tree. I'll make sure Paul and I sign Michael's PGP key before I leave. Cheers, Ben. </pre> Benjamin Herrenschmidt 2012-05-23T03:43:27 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50721 <pre>Hi Linus ! Here are the powerpc goodies for 3.5. Main highlights are: - Support for the NX crypto engine in Power7+ - A bunch of Anton goodness, including some micro optimization of our syscall entry on Power7 - I converted a pile of our thermal control drivers to the new i2c APIs (essentially turning the old therm_pm72 into a proper set of windfarm drivers). That's one more step toward removing the deprecated i2c APIs, there's still a few drivers to fix, but we are getting close - kexec/kdump support for 47x embedded cores The big missing thing here is no updates from Freescale. Not sure what's up here, but with Kumar not working for them anymore things are a bit in a state of flux in that area. [Sent from my ozlabs address because gate.crashing.org appears to have temporarily fallen off the face of the internet] Cheers, Ben. The following changes since commit 7c0482e3d055e5de056d3c693b821e39205b99ae: powerpc/irq: Fix another case of lazy IRQ state getting out of sync (2012-05-12</pre> Benjamin Herrenschmidt 2012-05-23T03:40:23 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50720 <pre>pcibios_setup_bus_devices which sets DMA and IRQs of PCI device is called only when boot, so DMA and IRQs of PCI device will not set when hotplug. This patch adds pcibios_device_change_notifier which sets DMA and IRQs of PCI device when PCI device adds, so DMA and IRQs of PCI device will be set when boot and hotplug. Signed-off-by: Hiroo MATSUMOTO &lt;matsumoto.hiroo&lt; at &gt;jp.fujitsu.com&gt; --- arch/microblaze/include/asm/pci.h | 2 +- arch/microblaze/pci/pci-common.c | 67 +++++++++++++++++++++--------------- 2 files changed, 40 insertions(+), 29 deletions(-) diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h index 0331376..8d11277 100644 --- a/arch/microblaze/include/asm/pci.h +++ b/arch/microblaze/include/asm/pci.h &lt; at &gt;&lt; at &gt; -149,8 +149,8 &lt; at &gt;&lt; at &gt; extern void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, resource_size_t *start, resource_size_t *end); -extern void pcibios_setup_bus_devices(struct pci_bus *bus); extern void pcibios_setup</pre> Hiroo Matsumoto 2012-05-23T02:34:03 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50719 <pre>pcibios_setup_bus_devices which sets DMA and IRQs of PCI device is called only when boot, so DMA and IRQs of PCI device will not set when hotplug. This patch adds pcibios_device_change_notifier which sets DMA and IRQs of PCI device when PCI device adds, so DMA and IRQs of PCI device will be set when boot and hotplug. * Not patched pciehp message on powerpc platform # echo 1 &gt; /sys/bus/pci/slots/1/power &lt;snip&gt; pcieport 0000:02:01.0: PCI bridge to [bus 03-03] pcieport 0000:02:01.0: bridge window [io 0xff7ee000-0xff7eefff] pcieport 0000:02:01.0: bridge window [mem 0xa0100000-0xa01fffff] pcieport 0000:02:01.0: bridge window [mem 0xa0200000-0xa02fffff 64bit pref] pci 0000:03:00.0: no hotplug settings from platform e1000e 0000:03:00.0: Disabling ASPM L1 e1000e 0000:03:00.0: enabling device (0000 -&gt; 0002) e1000e 0000:03:00.0: No usable DMA configuration, aborting e1000e: probe of 0000:03:00.0 failed with error -5 * Patched pciehp message on powerpc platform # echo 1 &gt; /sys/bus/pci/slots/1/power &lt;snip&gt; pciep</pre> Hiroo Matsumoto 2012-05-23T02:33:54 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50718 <pre>This patchset is for PCI hotplug. pcibios_setup_bus_devices which sets DMA and IRQs of PCI device is called only when boot. DMA setting in probe for PCI driver, like dma_set_mask, does not work on powerpc platform. So it is need to set DMA and IRQs of PCI device when hotplug. 1. Moving pcibios_setup_bus_devices code to pcibios_device_change_notifier which is registered to bus notifier in pcibios_init. 2. Removing caller and callee of pcibios_setup_bus_devices bus notifier works instead of pcibios_setup_bus_devices. 3. Using this bus notifier for microblaze because microblaze/PCI is similer with powerpc/PCI. [PATCH v2 1/2] powerpc/PCI: Add pcibios_device_change_notifier for powerpc [PATCH v2 2/2] microblaze/PCI: Add pcibios_device_change_notifier for microblaze Regards. Hiroo MATSUMOTO </pre> Hiroo Matsumoto 2012-05-23T02:33:42 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50711 <pre>Hi I came across the following issue while testing Kdump on an SMP board(Currituck) running a non-SMP kernel. Even though the kernel is UP, the device-tree has the nodes for second CPU and the related details. The kexec tool adds the spin table area as a reserved section in the device tree for the dump capture kernel. This value is read from the 'cpu-release-addr'. But now, if the spin table is not located within the 'Reserved region' for the crash kernel, the dump capture kernel would fail to boot, hitting a BUG in mm/bootmem.c as in [1]. This is because we try to reserve a region which is not available to the kernel. So I am wondering how is this handled really on an SMP board (Fsl_bookE). There are two possible solutions : 1) Do not reserve the regions for the spin-table, as we will use only the crashing CPU in the second kernel(maxcpus=1). 2) Add the spin-table region to the available memory regions passed to the kernel by kexec-tools. I have tested (1) and it works fine for me. Yet to te</pre> Suzuki K. Poulose 2012-05-22T12:42:10 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50709 <pre>FCB(Frame Control Block) isn't the part of netdev hard header. Add FCB to hard_header_len will make GRO fail at MAC comparision stage. Signed-off-by: Jiajun Wu &lt;b06378&lt; at &gt;freescale.com&gt; --- drivers/net/ethernet/freescale/gianfar.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/net/ethernet/freescale/gianfar.c b/drivers/net/ethernet/freescale/gianfar.c index 1adb024..0741ade 100644 --- a/drivers/net/ethernet/freescale/gianfar.c +++ b/drivers/net/ethernet/freescale/gianfar.c &lt; at &gt;&lt; at &gt; -1082,7 +1082,7 &lt; at &gt;&lt; at &gt; static int gfar_probe(struct platform_device *ofdev) if (dev-&gt;features &amp; NETIF_F_IP_CSUM || priv-&gt;device_flags &amp; FSL_GIANFAR_DEV_HAS_TIMER) -dev-&gt;hard_header_len += GMAC_FCB_LEN; +dev-&gt;needed_headroom = GMAC_FCB_LEN; /* Program the isrg regs only if number of grps &gt; 1 */ if (priv-&gt;num_grps &gt; 1) { </pre> Jiajun Wu 2012-05-22T09:00:48 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50696 <pre>Folks, bad news ... my fault. I accidentally forgot a --signoff on a git am command last week, meaning that a pair of patches are in -next and not signed off by me. For various (legal) reasons that cannot go into Linus tree as-is, so I have to rebase the tree to fix it. Sorry about that ... Cheers, Ben. </pre> Benjamin Herrenschmidt 2012-05-22T01:51:13 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50695 <pre>Hi all, Last nights boot tests on various PowerPC systems failed like this: calling .numa_group_init+0x0/0x3c &lt; at &gt; 1 initcall .numa_group_init+0x0/0x3c returned 0 after 0 usecs calling .numa_init+0x0/0x1dc &lt; at &gt; 1 Unable to handle kernel paging request for data at address 0x00001688 Faulting instruction address: 0xc00000000016e154 Oops: Kernel access of bad area, sig: 11 [#1] SMP NR_CPUS=32 NUMA pSeries Modules linked in: NIP: c00000000016e154 LR: c0000000001b9140 CTR: 0000000000000000 REGS: c0000003fc8c76d0 TRAP: 0300 Not tainted (3.4.0-autokern1) MSR: 8000000000009032 &lt;SF,EE,ME,IR,DR,RI&gt; CR: 24044022 XER: 00000003 SOFTE: 1 CFAR: 000000000000562c DAR: 0000000000001688, DSISR: 40000000 TASK = c0000003fc8c8000[1] 'swapper/0' THREAD: c0000003fc8c4000 CPU: 0 GPR00: 0000000000000000 c0000003fc8c7950 c000000000d05b30 00000000000012d0 GPR04: 0000000000000000 0000000000001680 0000000000000000 c0000003fe032f60 GPR08: 0004005400000001 0000000000000000 ffffffffffffc980 c000000000d24fe0 GPR12: 0000000024044024 c00</pre> Stephen Rothwell 2012-05-22T01:40:51 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50667 <pre> The following patch is to remove the pseries_notify_add_cpu() call and replace it by a hot plug notifier. This would prevent cpuidle resources being released and allocated each time cpu comes online on pseries. The earlier design was causing a lockdep problem in start_secondary as reported on this thread -https://lkml.org/lkml/2012/5/17/2 This applies on 3.4-rc7 Signed-off-by: Deepthi Dharwar &lt;deepthi&lt; at &gt;linux.vnet.ibm.com&gt; --- arch/powerpc/include/asm/processor.h | 2 -- arch/powerpc/platforms/pseries/processor_idle.c | 25 +++++++++++++++++------ arch/powerpc/platforms/pseries/smp.c | 1 - 3 files changed, 19 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 8e2d037..c6bc22b 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h &lt; at &gt;&lt; at &gt; -390,10 +390,8 &lt; at &gt;&lt; at &gt; void cpu_idle_wait(void); #ifdef CONFIG_PSERIES_IDLE extern void update_smt_snooze_delay(int snooze); -ex</pre> Deepthi Dharwar 2012-05-18T13:28:58 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50661 <pre>setting CONFIG_IRQ_ALL_CPUS distributes IRQs to CPUs only when the number of online CPUs equals NR_CPUS. See commit 280ff97494e0fef4124bee5c52e39b23a18dd283 "sparc64: fix and optimize irq distribution" for more details. Using the online mask fixes IRQ-to-CPU distribution on systems that boot with less than NR_CPUS. Signed-off-by: Kim Phillips &lt;kim.phillips&lt; at &gt;freescale.com&gt; --- arch/powerpc/kernel/irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 2a599ce..c05fd53 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c &lt; at &gt;&lt; at &gt; -891,7 +891,7 &lt; at &gt;&lt; at &gt; int irq_choose_cpu(const struct cpumask *mask) { int cpuid; -if (cpumask_equal(mask, cpu_all_mask)) { +if (cpumask_equal(mask, cpu_online_mask)) { static int irq_rover; static DEFINE_RAW_SPINLOCK(irq_rover_lock); unsigned long flags; </pre> Kim Phillips 2012-05-18T01:11:45 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50660 <pre>MTD_OF_PARTS and the default setting is not working due to using 'Y' instead of 'y', introduced in commit d6137badeff1ef64b4e0092ec249ebdeaeb3ff37. This made our board, and possibly other boards using DTS defined partitions and not having CONFIG_MTD_OF_PARTS=y defined in the defconfig, fail to mount root after v3.1. Signed-off-by: Frank Svendsboe &lt;frank.svendsboe&lt; at &gt;gmail.com&gt; --- drivers/mtd/Kconfig | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 5760c1a..27143e0 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig &lt; at &gt;&lt; at &gt; -128,7 +128,7 &lt; at &gt;&lt; at &gt; config MTD_AFS_PARTS config MTD_OF_PARTS tristate "OpenFirmware partitioning information support" -default Y +default y depends on OF help This provides a partition parsing function which derives </pre> Frank Svendsboe 2012-05-17T20:43:09 http://comments.gmane.org/gmane.linux.ports.ppc.embedded/50652 <pre> Greetings. I was occasionally running into problems at boot time on an MPC8315-based board (derived from the MPC831xRDB, apparently), using SATA to talk to an SSD. My vendor suggested that I enable CONFIG_MPC8315_DS. That symbol is only found once in the entire kernel codebase: $ git checkout v3.4-rc7 HEAD is now at 36be505... Linux 3.4-rc7 $ git grep -nH CONFIG_MPC8315_DS drivers/ata/sata_fsl.c:729:#ifdef CONFIG_MPC8315_DS There is no kconfig support for it at all. It was added in 2007; further, this is the only commit in the entire git history that contains this string: commit e7eac96e8f0e57a6e9f94943557bc2b23be31471 Author: ashish kalra &lt;ashish.kalra&lt; at &gt;freescale.com&gt; Date: Wed Oct 31 19:28:02 2007 +0800 ata/sata_fsl: Move MPC8315DS link speed limit workaround to specific ifdef Signed-off-by: ashish kalra &lt;ashish.kalra&lt; at &gt;freescale.com&gt; Signed-off-by: Li Yang &lt;leoli&lt; at &gt;freescale.com&gt; Signed-off-by: Jeff Garzik &lt;jeff&lt; at &gt;garzik.org&gt; diff --git a/drive</pre> Anthony Foiani 2012-05-17T17:08:18 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.linux.ports.ppc.embedded