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phy: rockchip-emmc: emmc_phy_init() always return 0 

[ Upstream commit 39961bd6b70e5a5d7c4b5483ad8e1db6b5765c60 ]

rockchip_emmc_phy_init() return variable is not set with the error value
if clk_get() failed. 'emmcclk' is optional, thus use clk_get_optional()
and if the return value != NULL make error processing and set the
return code accordingly.

Fixes: 52c0624a10 phy: rockchip-emmc: Set phyctrl_frqsel based on card clock
Signed-off-by: Chris Ruehl <chris.ruehl@gtsys.com.hk>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20201210080454.17379-1-chris.ruehl@gtsys.com.hk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chris Ruehl 2020-12-10 16:04:54 +08:00 committed by Greg Kroah-Hartman
parent 047e029392
commit 52fe389c0a
1 changed files with 5 additions and 3 deletions
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8
drivers/phy/rockchip/phy-rockchip-emmc.c
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@ -240,15 +240,17 @@ static int rockchip_emmc_phy_init(struct phy *phy)
* - SDHCI driver to get the PHY
* - SDHCI driver to init the PHY
*
* The clock is optional, so upon any error we just set to NULL.
* The clock is optional, using clk_get_optional() to get the clock
* and do error processing if the return value != NULL
*
* NOTE: we don't do anything special for EPROBE_DEFER here. Given the
* above expected use case, EPROBE_DEFER isn't sensible to expect, so
* it's just like any other error.
*/
rk_phy->emmcclk = clk_get(&phy->dev, "emmcclk");
rk_phy->emmcclk = clk_get_optional(&phy->dev, "emmcclk");
if (IS_ERR(rk_phy->emmcclk)) {
dev_dbg(&phy->dev, "Error getting emmcclk: %d\n", ret);
ret = PTR_ERR(rk_phy->emmcclk);
dev_err(&phy->dev, "Error getting emmcclk: %d\n", ret);
rk_phy->emmcclk = NULL;
}