ALSA: usb-audio: Use kmemdup rather than duplicating its implementation

Use kmemdup rather than duplicating its implementation

The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 4 deletions

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 2e5bc7344026..a3ddac0deffd 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -137,12 +137,12 @@ static int create_fixed_stream_quirk(struct snd_usb_audio *chip,
                 return -ENOMEM;
         }
         if (fp->nr_rates > 0) {
-                rate_table = kmalloc(sizeof(int) * fp->nr_rates, GFP_KERNEL);
+                rate_table = kmemdup(fp->rate_table,
+                                     sizeof(int) * fp->nr_rates, GFP_KERNEL);
                 if (!rate_table) {
                         kfree(fp);
                         return -ENOMEM;
                 }
-                memcpy(rate_table, fp->rate_table, sizeof(int) * fp->nr_rates);
                 fp->rate_table = rate_table;
         }
 
@@ -224,10 +224,9 @@ static int create_uaxx_quirk(struct snd_usb_audio *chip,
         if (altsd->bNumEndpoints != 1)
                 return -ENXIO;
 
-        fp = kmalloc(sizeof(*fp), GFP_KERNEL);
+        fp = kmemdup(&ua_format, sizeof(*fp), GFP_KERNEL);
         if (!fp)
                 return -ENOMEM;
-        memcpy(fp, &ua_format, sizeof(*fp));
 
         fp->iface = altsd->bInterfaceNumber;
         fp->endpoint = get_endpoint(alts, 0)->bEndpointAddress;