tifm: clear interrupt mask bits before setting them on adapter init

This should improve reliability of detection of cards already in socket on
driver load.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index 63a089b2954..67503ea71d2 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -368,6 +368,8 @@ static int tifm_7xx1_probe(struct pci_dev *dev,
                 goto err_out_irq;
 
         writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
+               fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
+        writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
                fm->addr + FM_SET_INTERRUPT_ENABLE);
         return 0;