diff options
| author | Bart Van Assche <bvanassche@acm.org> | 2023-01-13 02:42:14 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-01-24 05:35:54 +0300 |
| commit | 9a80bc5debf74b09f3a8bbc02cfba8d04e2048d0 (patch) | |
| tree | 34c159a59c380964a1beeb0883b6f9a0aacd2a09 /drivers/ufs | |
| parent | 86bd0c4a2a5dc4265884648cb92c681646509692 (diff) | |
| download | linux-9a80bc5debf74b09f3a8bbc02cfba8d04e2048d0.tar.xz | |
scsi: ufs: exynos: Fix the maximum segment size
Prepare for enabling DMA clustering and also for supporting PAGE_SIZE !=
4096 by declaring explicitly that the maximum segment size is 4096 bytes
for Exynos UFS host controllers. Add this code in
exynos_ufs_hce_enable_notify() such that it happens after scsi_host_alloc()
and before __scsi_init_queue() is called by the LUN scanning code.
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Tested-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/host/ufs-exynos.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 3cdac89a28b8..7c985fc38db1 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -1300,6 +1300,14 @@ static int exynos_ufs_hce_enable_notify(struct ufs_hba *hba, switch (status) { case PRE_CHANGE: + /* + * The maximum segment size must be set after scsi_host_alloc() + * has been called and before LUN scanning starts + * (ufshcd_async_scan()). Note: this callback may also be called + * from other functions than ufshcd_init(). + */ + hba->host->max_segment_size = 4096; + if (ufs->drv_data->pre_hce_enable) { ret = ufs->drv_data->pre_hce_enable(ufs); if (ret) |