[PATCH 2/3] scsi: ufs: Exynos: Fix the maximum segment size

[Bart Van Assche <bvanassche@acm.org>]

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.

Cc: Kiwoong Kim <kwmad.kim@samsung.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/ufs/host/ufs-exynos.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c
index 3cdac89a28b8..821c000ca6b0 100644
--- a/drivers/ufs/host/ufs-exynos.c
+++ b/drivers/ufs/host/ufs-exynos.c
@@ -1586,15 +1586,21 @@ static int exynos_ufs_probe(struct platform_device *pdev)
 	const struct ufs_hba_variant_ops *vops = &ufs_hba_exynos_ops;
 	const struct exynos_ufs_drv_data *drv_data =
 		device_get_match_data(dev);
+	struct ufs_hba *hba;
 
 	if (drv_data && drv_data->vops)
 		vops = drv_data->vops;
 
 	err = ufshcd_pltfrm_init(pdev, vops);
-	if (err)
+	if (err) {
 		dev_err(dev, "ufshcd_pltfrm_init() failed %d\n", err);
+		return err;
+	}
+
+	hba = dev_get_drvdata(dev);
+	hba->host->max_segment_size = 4096;
 
-	return err;
+	return 0;
 }
 
 static int exynos_ufs_remove(struct platform_device *pdev)