From: Fuqian Huang Date: Wed, 3 Jul 2019 16:28:48 +0000 (-0300) Subject: media: media/tuners: Use kmemdup rather than duplicating its implementation X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=48059784ebac75a98e024c29ab301e05a8b8012f;p=linux.git media: media/tuners: Use kmemdup rather than duplicating its implementation kmemdup is introduced to duplicate a region of memory in a neat way. Rather than kmalloc/kzalloc + memcpy, which the programmer needs to write the size twice (sometimes lead to mistakes), kmemdup improves readability, leads to smaller code and also reduce the chances of mistakes. Suggestion to use kmemdup rather than using kmalloc/kzalloc + memcpy. Signed-off-by: Fuqian Huang Signed-off-by: Sean Young Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/tuners/tuner-xc2028.c b/drivers/media/tuners/tuner-xc2028.c index aa6861dcd3fd7..574c3bb135d72 100644 --- a/drivers/media/tuners/tuner-xc2028.c +++ b/drivers/media/tuners/tuner-xc2028.c @@ -381,7 +381,7 @@ static int load_all_firmwares(struct dvb_frontend *fe, goto corrupt; } - priv->firm[n].ptr = kzalloc(size, GFP_KERNEL); + priv->firm[n].ptr = kmemdup(p, size, GFP_KERNEL); if (priv->firm[n].ptr == NULL) { tuner_err("Not enough memory to load firmware file.\n"); rc = -ENOMEM; @@ -394,7 +394,6 @@ static int load_all_firmwares(struct dvb_frontend *fe, type, (unsigned long long)id, size); } - memcpy(priv->firm[n].ptr, p, size); priv->firm[n].type = type; priv->firm[n].id = id; priv->firm[n].size = size; diff --git a/drivers/media/tuners/xc4000.c b/drivers/media/tuners/xc4000.c index 43925e219d815..d9606738ce432 100644 --- a/drivers/media/tuners/xc4000.c +++ b/drivers/media/tuners/xc4000.c @@ -812,7 +812,7 @@ static int xc4000_fwupload(struct dvb_frontend *fe) goto corrupt; } - priv->firm[n].ptr = kzalloc(size, GFP_KERNEL); + priv->firm[n].ptr = kmemdup(p, size, GFP_KERNEL); if (priv->firm[n].ptr == NULL) { printk(KERN_ERR "Not enough memory to load firmware file.\n"); rc = -ENOMEM; @@ -826,7 +826,6 @@ static int xc4000_fwupload(struct dvb_frontend *fe) type, (unsigned long long)id, size); } - memcpy(priv->firm[n].ptr, p, size); priv->firm[n].type = type; priv->firm[n].id = id; priv->firm[n].size = size;