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| author | Ruan Jinjie <ruanjinjie@huawei.com> | 2023-08-10 15:16:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-08-11 22:38:49 +0300 |
| commit | 183238ffb8863e3d5efea6c59ef68428125ea30d (patch) | |
| tree | d85f60f2d40e4ca8581e45e20f4dee84b2f8cae0 /drivers/misc | |
| parent | 25a7de32c89d63d11257a67ff42f24630f8eabf1 (diff) | |
| download | linux-183238ffb8863e3d5efea6c59ef68428125ea30d.tar.xz | |
misc: eeprom/idt_89hpesx: Switch to memdup_user_nul() helper
Use memdup_user_nul() helper instead of open-coding to simplify the code.
Signed-off-by: Ruan Jinjie <ruanjinjie@huawei.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://lore.kernel.org/r/20230810121608.2110328-1-ruanjinjie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/eeprom/idt_89hpesx.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/drivers/misc/eeprom/idt_89hpesx.c b/drivers/misc/eeprom/idt_89hpesx.c index 740c06382b83..433a4bc6b1c5 100644 --- a/drivers/misc/eeprom/idt_89hpesx.c +++ b/drivers/misc/eeprom/idt_89hpesx.c @@ -913,15 +913,9 @@ static ssize_t idt_dbgfs_csr_write(struct file *filep, const char __user *ubuf, return 0; /* Copy data from User-space */ - buf = kmalloc(count + 1, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - if (copy_from_user(buf, ubuf, count)) { - ret = -EFAULT; - goto free_buf; - } - buf[count] = 0; + buf = memdup_user_nul(ubuf, count); + if (IS_ERR(buf)) + return PTR_ERR(buf); /* Find position of colon in the buffer */ colon_ch = strnchr(buf, count, ':'); |