xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

virtio: use size-based config accessors.

Browse Source 
This lets the transport do endian conversion if necessary, and insulates
the drivers from the difference.

Most drivers can use the simple helpers virtio_cread() and virtio_cwrite().

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2013-10-14 18:11:51 +10:30
parent 0b90d0622a
commit 855e0c5288
7 changed files with 79 additions and 95 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/scsi/virtio_scsi.c
View File

@@ -710,19 +710,15 @@ static struct scsi_host_template virtscsi_host_template_multi = {
#define virtscsi_config_get(vdev, fld) \
({ \
typeof(((struct virtio_scsi_config *)0)->fld) __val; \
vdev->config->get(vdev, \
offsetof(struct virtio_scsi_config, fld), \
&__val, sizeof(__val)); \
virtio_cread(vdev, struct virtio_scsi_config, fld, &__val); \
__val; \
})
#define virtscsi_config_set(vdev, fld, val) \
(void)({ \
do { \
typeof(((struct virtio_scsi_config *)0)->fld) __val = (val); \
vdev->config->set(vdev, \
offsetof(struct virtio_scsi_config, fld), \
&__val, sizeof(__val)); \
})
virtio_cwrite(vdev, struct virtio_scsi_config, fld, &__val); \
} while(0)
static void __virtscsi_set_affinity(struct virtio_scsi *vscsi, bool affinity)
{