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| /openbmc/linux/drivers/ata/ |
| H A D | ahci.c | diff 41669553353554211310cdb23079d58af1fda41e Tue Nov 28 20:33:14 CST 2006 Tejun Heo <htejun@gmail.com> [PATCH] ahci: ignore PORT_IRQ_IF_ERR on JMB controllers
JMicron AHCI controllers set PORT_IRQ_IF_ERR on device errors. The
IRQ status bit indicates interface error or protocol mismatch and ahci
driver interprets it into AC_ERR_ATA_BUS. So, whenever an ATAPI
device raises check condition, ahci interprets it as ATA bus error and
thus resets it which, in turn, raises check condition thus creating a
reset loop and rendering the device unuseable.
This patch makes JMB controllers ignore PORT_IRQ_IF_ERR when
interpreting error condition.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Justin Tsai <justin@jmicron.com>
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