tty: cyclades, remove spurious check in ISR

No need to check if dev_id is NULL, it never is.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 6d52439..ccf68a9 100644 (file)
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -1737,14 +1737,6 @@ static irqreturn_t cyz_interrupt(int irq, void *dev_id)
 {
        struct cyclades_card *cinfo = dev_id;
 
-       if (unlikely(cinfo == NULL)) {
-#ifdef CY_DEBUG_INTERRUPTS
-               printk(KERN_DEBUG "cyz_interrupt: spurious interrupt %d\n",
-                                                                       irq);
-#endif
-               return IRQ_NONE;        /* spurious interrupt */
-       }
-
        if (unlikely(!ISZLOADED(*cinfo))) {
 #ifdef CY_DEBUG_INTERRUPTS
                printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "