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drm/amdgpu: unlock on error in amdgpu_ras_debugfs_table_read() 

This error path needs to unlock before returning.  While we're at it,
the correct error code from copy_to_user() failure is -EFAULT, not
-EINVAL.

Fixes: c65b0805e7 ("drm/amdgpu: RAS EEPROM table is now in debugfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dan Carpenter 2021-07-03 12:45:39 +03:00 committed by Alex Deucher
parent 1d864f1088
commit b8badd507a
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
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@ -821,7 +821,7 @@ static ssize_t amdgpu_ras_debugfs_table_read(struct file *f, char __user *buf,
struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
struct amdgpu_ras_eeprom_control *control = &ras->eeprom_control;
const size_t orig_size = size;
int res = -EINVAL;
int res = -EFAULT;
size_t data_len;
mutex_lock(&control->ras_tbl_mutex);
@ -912,8 +912,10 @@ static ssize_t amdgpu_ras_debugfs_table_read(struct file *f, char __user *buf,
record.retired_page);
data_len = min_t(size_t, rec_hdr_fmt_size - r, size);
if (copy_to_user(buf, &data[r], data_len))
return -EINVAL;
if (copy_to_user(buf, &data[r], data_len)) {
res = -EFAULT;
goto Out;
}
buf += data_len;
size -= data_len;
*pos += data_len;