usb: phy: samsung: Consolidate reference clock rate handling

This patch cleans up handling of reference clock rate in Samsung USB PHY
drivers. It is mostly a cosmetic change but improves error handling in
case of failing to get reference clock or invalid clock rate.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/usb/phy/phy-samsung-usb3.c b/drivers/usb/phy/phy-samsung-usb3.c
index 5a9efcbcb532..ec44b35fb24a 100644
--- a/drivers/usb/phy/phy-samsung-usb3.c
+++ b/drivers/usb/phy/phy-samsung-usb3.c
@@ -274,7 +274,10 @@ static int samsung_usb3phy_probe(struct platform_device *pdev)
         sphy->phy.init          = samsung_usb3phy_init;
         sphy->phy.shutdown      = samsung_usb3phy_shutdown;
         sphy->drv_data          = samsung_usbphy_get_driver_data(pdev);
-        sphy->ref_clk_freq      = samsung_usbphy_get_refclk_freq(sphy);
+
+        sphy->ref_clk_freq = samsung_usbphy_get_refclk_freq(sphy);
+        if (sphy->ref_clk_freq < 0)
+                return -EINVAL;
 
         spin_lock_init(&sphy->lock);
 
@@ -300,6 +303,7 @@ static int samsung_usb3phy_remove(struct platform_device *pdev)
 static struct samsung_usbphy_drvdata usb3phy_exynos5 = {
         .cpu_type               = TYPE_EXYNOS5250,
         .devphy_en_mask         = EXYNOS_USBPHY_ENABLE,
+        .rate_to_clksel         = samsung_usbphy_rate_to_clksel_4x12,
 };
 
 #ifdef CONFIG_OF