Tejun Heo wrote:
When PCIX_IRQ_WOC is used, sil24 has an inherent race condition between clearing IRQ pending and reading IRQ status. If IRQ pending is cleared after reading IRQ status, there's possibility of lost IRQ. If IRQ pending is cleared before reading IRQ status, spurious IRQs will occur. sata_sil24 till now cleared IRQ pending after reading IRQ status thus losing IRQs on machines where PCIX_IRQ_WOC was used. Reverse the order and ignore spurious IRQs if PCIX_IRQ_WOC. Signed-off-by: Tejun Heo <htejun@xxxxxxxxx> --- The previous patch contained a stupid mistake. This is the correct one. drivers/ata/sata_sil24.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
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