diff options
Diffstat (limited to 'sound/oss/emu10k1/audio.c')
| -rw-r--r-- | sound/oss/emu10k1/audio.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sound/oss/emu10k1/audio.c b/sound/oss/emu10k1/audio.c index cde4d59d5430..49f902f35c28 100644 --- a/sound/oss/emu10k1/audio.c +++ b/sound/oss/emu10k1/audio.c @@ -36,6 +36,7 @@ #include <linux/bitops.h> #include <asm/io.h> #include <linux/sched.h> +#include <linux/mm.h> #include <linux/smp_lock.h> #include "hwaccess.h" @@ -110,9 +111,15 @@ static ssize_t emu10k1_audio_read(struct file *file, char __user *buffer, size_t if ((bytestocopy >= wiinst->buffer.fragment_size) || (bytestocopy >= count)) { + int rc; + bytestocopy = min_t(u32, bytestocopy, count); - emu10k1_wavein_xferdata(wiinst, (u8 __user *)buffer, &bytestocopy); + rc = emu10k1_wavein_xferdata(wiinst, + (u8 __user *)buffer, + &bytestocopy); + if (rc) + return rc; count -= bytestocopy; buffer += bytestocopy; |