diff options
| author | Markus Elfring <elfring@users.sourceforge.net> | 2017-08-12 20:50:16 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-08-12 23:35:48 +0200 |
| commit | f1a77dc17103e53e43f33beab67a287feafa6aa3 (patch) | |
| tree | c790532224128c5cb9a53f71fb1c34c83bc13784 | |
| parent | ec1f43c83b9df3052209e0c7e7d936e15251c867 (diff) | |
ALSA: mpu401: Adjust four checks for null pointers
The script “checkpatch.pl” pointed information out like the following.
Comparison to NULL could be written !…
Thus fix the affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/drivers/mpu401/mpu401_uart.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/sound/drivers/mpu401/mpu401_uart.c b/sound/drivers/mpu401/mpu401_uart.c index e8bdea193eab..b997222274bd 100644 --- a/sound/drivers/mpu401/mpu401_uart.c +++ b/sound/drivers/mpu401/mpu401_uart.c @@ -136,7 +136,7 @@ irqreturn_t snd_mpu401_uart_interrupt(int irq, void *dev_id) { struct snd_mpu401 *mpu = dev_id; - if (mpu == NULL) + if (!mpu) return IRQ_NONE; _snd_mpu401_uart_interrupt(mpu); return IRQ_HANDLED; @@ -157,7 +157,7 @@ irqreturn_t snd_mpu401_uart_interrupt_tx(int irq, void *dev_id) { struct snd_mpu401 *mpu = dev_id; - if (mpu == NULL) + if (!mpu) return IRQ_NONE; uart_interrupt_tx(mpu); return IRQ_HANDLED; @@ -544,7 +544,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device, out_enable, in_enable, &rmidi)) < 0) return err; mpu = kzalloc(sizeof(*mpu), GFP_KERNEL); - if (mpu == NULL) { + if (!mpu) { err = -ENOMEM; goto free_device; } @@ -558,7 +558,7 @@ int snd_mpu401_uart_new(struct snd_card *card, int device, if (! (info_flags & MPU401_INFO_INTEGRATED)) { int res_size = hardware == MPU401_HW_PC98II ? 4 : 2; mpu->res = request_region(port, res_size, "MPU401 UART"); - if (mpu->res == NULL) { + if (!mpu->res) { snd_printk(KERN_ERR "mpu401_uart: " "unable to grab port 0x%lx size %d\n", port, res_size); |