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| author |   Tejun Heo <htejun@gmail.com> | 2006-12-12 20:17:32 +0900 |
|---|---|---|
| committer |   Jeff Garzik <jeff@garzik.org> | 2006-12-16 10:13:29 -0500 |
| commit | 551c012d7eea3dc5ec063c7ff9c718d39e77634f (patch) | |
| tree | 244c89c1e0d6878a036fde806f080bf8885c661b /drivers/ata/ahci.c | |
| parent | [PATCH] libata: don't initialize sg in ata_exec_internal() if DMA_NONE (take #2) (diff) | |
| download | linux-dev-551c012d7eea3dc5ec063c7ff9c718d39e77634f.tar.xz linux-dev-551c012d7eea3dc5ec063c7ff9c718d39e77634f.zip | |
[PATCH] ahci: do not mangle saved HOST_CAP while resetting controller
Do not mangle with HOST_CAP while resetting controller. The code is
there for a historical reason. The mangling breaks controller feature
detection and 0 PORTS_IMPL workaround code.
This problem was spotted by Manoj Kasichainula.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Manoj Kasichainula <manoj@io.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/ata/ahci.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index f36da488a2c1..dbae6d971041 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -645,8 +645,6 @@ static int ahci_reset_controller(void __iomem *mmio, struct pci_dev *pdev) u32 cap_save, impl_save, tmp; cap_save = readl(mmio + HOST_CAP); - cap_save &= ( (1<<28) | (1<<17) ); - cap_save |= (1 << 27); impl_save = readl(mmio + HOST_PORTS_IMPL); /* global controller reset */ |