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Message-Id: <20241104214310.6048-2-jiashengjiangcool@gmail.com>
Date: Mon, 4 Nov 2024 21:43:09 +0000
From: Jiasheng Jiang <jiashengjiangcool@...il.com>
To: rmk@...-67.arm.linux.org.uk,
max.schwarz@...ine.de,
dianders@...omium.org,
david.wu@...k-chips.com,
heiko@...ech.de,
vz@...ia.com,
andi.shyti@...nel.org,
wsa@...nel.org,
manabian@...il.com
Cc: linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org,
linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org,
Jiasheng Jiang <jiashengjiangcool@...il.com>
Subject: [PATCH 2/3] i2c: pxa: Add check for clk_enable() and clk_prepare_enable()
Add check for the return values of clk_enable() and clk_prepare_enable()
in order to catch the potential exceptions.
Fixes: e7d48fa2b5fb ("[I2C] pxa: provide late suspend and early resume hooks")
Fixes: c3cef3f3c07b ("[ARM] pxa: update pxa i2c driver to use clk support")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@...il.com>
---
drivers/i2c/busses/i2c-pxa.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 4d76e71cdd4b..1118a7f5c6bf 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -1503,7 +1503,11 @@ static int i2c_pxa_probe(struct platform_device *dev)
i2c->adap.name);
}
- clk_prepare_enable(i2c->clk);
+ ret = clk_prepare_enable(i2c->clk);
+ if (ret) {
+ dev_err(&dev->dev, "failed to enable clock: %d\n", ret);
+ return ret;
+ }
if (i2c->use_pio) {
i2c->adap.algo = &i2c_pxa_pio_algorithm;
@@ -1560,8 +1564,14 @@ static int i2c_pxa_suspend_noirq(struct device *dev)
static int i2c_pxa_resume_noirq(struct device *dev)
{
struct pxa_i2c *i2c = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_enable(i2c->clk);
+ if (ret) {
+ dev_err(dev, "failed to enable clock: %d\n", ret);
+ return ret;
+ }
- clk_enable(i2c->clk);
i2c_pxa_reset(i2c);
return 0;
--
2.25.1
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