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| author | Jeff Garzik <jeff@garzik.org> | 2006-10-06 19:00:58 (GMT) |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-10-06 19:00:58 (GMT) |
| commit | c7bec5aba52392aa8d675b8722735caf4a8b7265 (patch) | |
| tree | 8087cfd2866e63fba25e18ba1fa0f374c27be4f0 /drivers/char/riscom8.c | |
| parent | c31f28e778ab299a5035ea2bda64f245b8915d7c (diff) | |
| download | linux-c7bec5aba52392aa8d675b8722735caf4a8b7265.tar.xz | |
Various drivers' irq handlers: kill dead code, needless casts
- Eliminate casts to/from void*
- Eliminate checks for conditions that never occur. These typically
fall into two classes:
1) Checking for 'dev_id == NULL', then it is never called with
NULL as an argument.
2) Checking for invalid irq number, when the only caller (the
system) guarantees the irq handler is called with the proper
'irq' number argument.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/char/riscom8.c')
| -rw-r--r-- | drivers/char/riscom8.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c index be68cfb..5ab32b3 100644 --- a/drivers/char/riscom8.c +++ b/drivers/char/riscom8.c @@ -559,11 +559,10 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id) int handled = 0; bp = IRQ_to_board[irq]; - - if (!bp || !(bp->flags & RC_BOARD_ACTIVE)) { + + if (!(bp->flags & RC_BOARD_ACTIVE)) return IRQ_NONE; - } - + while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) & (RC_BSR_TOUT | RC_BSR_TINT | RC_BSR_MINT | RC_BSR_RINT))) { |