From 48059784ebac75a98e024c29ab301e05a8b8012f Mon Sep 17 00:00:00 2001
From: Fuqian Huang <huangfq.daxian@gmail.com>
Date: Wed, 3 Jul 2019 13:28:48 -0300
Subject: [PATCH] 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 <huangfq.daxian@gmail.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
drivers/media/tuners/tuner-xc2028.c | 3 +--
drivers/media/tuners/xc4000.c | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/media/tuners/tuner-xc2028.c b/drivers/media/tuners/tuner-xc2028.c
index aa6861dcd3fd..574c3bb135d7 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 43925e219d81..d9606738ce43 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;