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| author | Jesper Juhl <juhl-lkml@dif.dk> | 2005-06-26 01:58:49 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-26 03:25:00 +0400 |
| commit | 09417379be9b126e10ae7dcd7afc20b666146266 (patch) | |
| tree | 0236f4cb1afb4cf9a7f13b67e6ac639c55fa0440 /sound/oss/dmasound/dmasound_awacs.c | |
| parent | 4ae6673e029d609da7ef4311440d6de501d6967a (diff) | |
| download | linux-09417379be9b126e10ae7dcd7afc20b666146266.tar.xz | |
[PATCH] remove redundant NULL checks before kfree() in sound/ and avoid casting pointers about to be kfree()'ed
Checking a pointer for NULL before calling kfree() on it is redundant,
kfree() deals with NULL pointers just fine.
This patch removes such checks from sound/
This patch also makes another, but closely related, change.
It avoids casting pointers about to be kfree()'ed.
Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'sound/oss/dmasound/dmasound_awacs.c')
| -rw-r--r-- | sound/oss/dmasound/dmasound_awacs.c | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/sound/oss/dmasound/dmasound_awacs.c b/sound/oss/dmasound/dmasound_awacs.c index 5281b88987f3..33108661e671 100644 --- a/sound/oss/dmasound/dmasound_awacs.c +++ b/sound/oss/dmasound/dmasound_awacs.c @@ -671,14 +671,10 @@ static void PMacIrqCleanup(void) release_OF_resource(awacs_node, 1); release_OF_resource(awacs_node, 2); - if (awacs_tx_cmd_space) - kfree(awacs_tx_cmd_space); - if (awacs_rx_cmd_space) - kfree(awacs_rx_cmd_space); - if (beep_dbdma_cmd_space) - kfree(beep_dbdma_cmd_space); - if (beep_buf) - kfree(beep_buf); + kfree(awacs_tx_cmd_space); + kfree(awacs_rx_cmd_space); + kfree(beep_dbdma_cmd_space); + kfree(beep_buf); #ifdef CONFIG_PMAC_PBOOK pmu_unregister_sleep_notifier(&awacs_sleep_notifier); #endif @@ -2301,8 +2297,7 @@ if (count <= 0) #endif if ((write_sq.max_count + 1) > number_of_tx_cmd_buffers) { - if (awacs_tx_cmd_space) - kfree(awacs_tx_cmd_space); + kfree(awacs_tx_cmd_space); number_of_tx_cmd_buffers = 0; /* we need nbufs + 1 (for the loop) and we should request + 1 @@ -2360,8 +2355,7 @@ if (count <= 0) #endif if ((read_sq.max_count+1) > number_of_rx_cmd_buffers ) { - if (awacs_rx_cmd_space) - kfree(awacs_rx_cmd_space); + kfree(awacs_rx_cmd_space); number_of_rx_cmd_buffers = 0; /* we need nbufs + 1 (for the loop) and we should request + 1 again @@ -2805,7 +2799,7 @@ __init setup_beep(void) beep_buf = (short *) kmalloc(BEEP_BUFLEN * 4, GFP_KERNEL); if (beep_buf == NULL) { printk(KERN_ERR "dmasound_pmac: no memory for beep buffer\n"); - if( beep_dbdma_cmd_space ) kfree(beep_dbdma_cmd_space) ; + kfree(beep_dbdma_cmd_space) ; return -ENOMEM ; } return 0 ; |