diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-01-06 10:54:48 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-01-06 20:53:31 +0300 |
| commit | 31834aaa4e2a26d8d1f6b36703bb35cfdb8fc98c (patch) | |
| tree | 905e0d224a695b0a1fa50be074a8b57f76e72c03 /drivers | |
| parent | 53e8558837be58c1d44d50ad87247a8c56c95c13 (diff) | |
| download | linux-31834aaa4e2a26d8d1f6b36703bb35cfdb8fc98c.tar.xz | |
ACPI: pfr_update: Fix return value check in pfru_write()
In case of error, memremap() returns NULL pointer not
ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.
Fixes: 0db89fa243e5 ("ACPI: Introduce Platform Firmware Runtime Update device driver")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Acked-by: Chen Yu <yu.c.chen@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/pfr_update.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/acpi/pfr_update.c b/drivers/acpi/pfr_update.c index 149b5b2530b9..6bb0b778b5da 100644 --- a/drivers/acpi/pfr_update.c +++ b/drivers/acpi/pfr_update.c @@ -460,8 +460,8 @@ static ssize_t pfru_write(struct file *file, const char __user *buf, /* map the communication buffer */ phy_addr = (phys_addr_t)((buf_info.addr_hi << 32) | buf_info.addr_lo); buf_ptr = memremap(phy_addr, buf_info.buf_size, MEMREMAP_WB); - if (IS_ERR(buf_ptr)) - return PTR_ERR(buf_ptr); + if (!buf_ptr) + return -ENOMEM; if (!copy_from_iter_full(buf_ptr, len, &iter)) { ret = -EINVAL; |