On Sat, Mar 12, 2022 at 02:28:53PM +0100, Krzysztof Kozlowski wrote:
Use a helper to set driver_override to reduce amount of duplicated code.
Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com
Acked-by: Michael S. Tsirkin mst@redhat.com
drivers/vdpa/vdpa.c | 29 ++++------------------------- include/linux/vdpa.h | 4 +++- 2 files changed, 7 insertions(+), 26 deletions(-)
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 1ea525433a5c..2dabed1df35c 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -77,32 +77,11 @@ static ssize_t driver_override_store(struct device *dev, const char *buf, size_t count) { struct vdpa_device *vdev = dev_to_vdpa(dev);
- const char *driver_override, *old;
- char *cp;
- int ret;
- /* We need to keep extra room for a newline */
- if (count >= (PAGE_SIZE - 1))
return -EINVAL;- driver_override = kstrndup(buf, count, GFP_KERNEL);
- if (!driver_override)
return -ENOMEM;- cp = strchr(driver_override, '\n');
- if (cp)
*cp = '\0';- device_lock(dev);
- old = vdev->driver_override;
- if (strlen(driver_override)) {
vdev->driver_override = driver_override;- } else {
kfree(driver_override);vdev->driver_override = NULL;- }
- device_unlock(dev);
- kfree(old);
ret = driver_set_override(dev, &vdev->driver_override, buf, count);
if (ret)
return ret;return count;
} diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 721089bb4c84..37117404660e 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -64,7 +64,9 @@ struct vdpa_mgmt_dev;
- struct vdpa_device - representation of a vDPA device
- @dev: underlying device
- @dma_dev: the actual device that is performing DMA
- @driver_override: driver name to force a match
- @driver_override: driver name to force a match; do not set directly,
because core frees it; use driver_set_override() to
set or clear it.- @config: the configuration ops for this device.
- @cf_mutex: Protects get and set access to configuration layout.
- @index: device index
-- 2.32.0