From b8b225da139f5770d7689b189fd5debc58f4b35d Mon Sep 17 00:00:00 2001 From: Philip J Kelleher Date: Tue, 18 Jun 2013 14:49:48 -0500 Subject: rsxx: Adding EEH check inside cregs timeout. Unfortunaly, our CPU register path does not do any kind of EEH error checking. So to fix this issue, an ioread32 was added to the CPU register timeout code. This way, the driver can check to see if the timeout was caused by an EEH error or not. This is a dummy read. Signed-off-by: Philip J Kelleher Signed-off-by: Jens Axboe --- drivers/block/rsxx/cregs.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/block') diff --git a/drivers/block/rsxx/cregs.c b/drivers/block/rsxx/cregs.c index 4914464..926dce9 100644 --- a/drivers/block/rsxx/cregs.c +++ b/drivers/block/rsxx/cregs.c @@ -431,6 +431,15 @@ static int __issue_creg_rw(struct rsxx_cardinfo *card, *hw_stat = completion.creg_status; if (completion.st) { + /* + * This read is needed to verify that there has not been any + * extreme errors that might have occurred, i.e. EEH. The + * function iowrite32 will not detect EEH errors, so it is + * necessary that we recover if such an error is the reason + * for the timeout. This is a dummy read. + */ + ioread32(card->regmap + SCRATCH); + dev_warn(CARD_TO_DEV(card), "creg command failed(%d x%08x)\n", completion.st, addr); -- cgit v1.1