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>
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)