The patch titled
ata_timing: ensure t->cycle is always correct
has been added to the -mm tree. Its filename is
ata_timing-ensure-t-cycle-is-always-correct.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: ata_timing: ensure t->cycle is always correct
From: Alan Cox <alan@xxxxxxxxxxxxxxxxxxx>
Russell King hit a case where quantisation errors accumulated such that the
cycle time was shorter than rather than equal to the active/recovery time.
The code already knows how to stretch times to fit the cycle time but does
not know about the reverse.
Signed-off-by: Alan Cox <alan@xxxxxxxxxx>
Cc: Tejun Heo <htejun@xxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/ata/libata-core.c | 6 ++++++
1 file changed, 6 insertions(+)
diff -puN drivers/ata/libata-core.c~ata_timing-ensure-t-cycle-is-always-correct drivers/ata/libata-core.c
--- a/drivers/ata/libata-core.c~ata_timing-ensure-t-cycle-is-always-correct
+++ a/drivers/ata/libata-core.c
@@ -2615,6 +2615,12 @@ int ata_timing_compute(struct ata_device
t->recover = t->cycle - t->active;
}
+ /* In a few cases quantisation may produce enough errors to
+ leave t->cycle too low for the sum of active and recovery
+ if so we must correct this */
+ if (t->active + t->recover > t->cycle)
+ t->cycle = t->active + t->recover;
+
return 0;
}
_
Patches currently in -mm which might be from alan@xxxxxxxxxxxxxxxxxxx are
origin.patch
git-agpgart.patch
git-powerpc.patch
git-libata-all.patch
pata_hpt37x-further-small-fixes.patch
pata_hpt3x2n-add-hpt371n-support-and-other-bits.patch
drivers-ata-pata_cmd640c-fix-build-with-config_pm=n.patch
ata_timing-ensure-t-cycle-is-always-correct.patch
libata-fix-hopefully-all-the-remaining-problems-with.patch
testing-patch-for-ali-pata-fixes-hopefully-for-the-problems-with-atapi-dma.patch
testing-patch-for-ali-pata-fixes-hopefully-for-the-problems-with-atapi-dma-fix.patch
git-netdev-all.patch
pcmcia-irq-probe-can-be-done-without-risking-an-irq-storm.patch
serial-suppress-rts-assertion-with-disabled-crtscts.patch
drivers-scsi-ncr5380c-replacing-yield-with-a.patch
drivers-scsi-mca_53c9xc-save_flags-cli-removal.patch
driver_bfin_serial_core.patch
driver_bfin_serial_core-update.patch
documentation-ask-driver-writers-to-provide-pm-support.patch
tty-clarify-documentation-of-write.patch
tty-i386-x86_64-arbitary-speed-support.patch
fixes-and-cleanups-for-earlyprintk-aka-boot-console.patch
tty-remove-unnecessary-export-of-proc_clear_tty.patch
tty-simplify-calling-of-put_pid.patch
tty-introduce-no_tty-and-use-it-in-selinux.patch
tty-in-tiocsctty-when-we-steal-a-tty-hang-it-up.patch
protect-tty-drivers-list-with-tty_mutex.patch
fix-82875-pci-setup.patch
doc-kernel-parameters-use-x86-32-tag-instead-of-ia-32.patch
remove-redundant-check-from-proc_sys_setattr.patch
apm-fix-incorrect-comment.patch
upper-32-bits.patch
console-utf-8-fixes.patch
add-pci_try_set_mwi.patch
edac-new-opteron-athlon64-memory-controller-driver.patch
edac-k8-driver-coding-tidy.patch
revoke-core-code-revoke-no-revoke-for-nommu.patch
add-irqf_irqpoll-flag-common-code.patch
add-irqf_irqpoll-flag-on-x86_64.patch
add-irqf_irqpoll-flag-on-i386.patch
add-irqf_irqpoll-flag-on-ia64.patch
add-irqf_irqpoll-flag-on-sh.patch
add-irqf_irqpoll-flag-on-arm.patch
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