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Subject[PATCH 1/6] ide: make "paranoia" ->handler check in ide_intr() more strict
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: make "paranoia" ->handler check in ide_intr() more strict

If ->handler is set while it shouldn't be it indicates deep problems
so BUG_ON()-ning and preventing further damage is much more appropriate
than merely printing an error message.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
trivia for pata-2.6 tree
drivers/ide/ide-io.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -1159,12 +1159,9 @@ irqreturn_t ide_intr (int irq, void *dev
* won't allow another of the same (on any CPU) until we return.
*/
if (startstop == ide_stopped) {
- if (hwif->handler == NULL) { /* paranoia */
- ide_unlock_port(hwif);
- plug_device = 1;
- } else
- printk(KERN_ERR "%s: %s: huh? expected NULL handler "
- "on exit\n", __func__, drive->name);
+ BUG_ON(hwif->handler);
+ ide_unlock_port(hwif);
+ plug_device = 1;
}
out_handled:
irq_ret = IRQ_HANDLED;

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