clang points out that ret may be used uninitialized in
lpc32xx_i2s_probe() in an error pointer path (which becomes fatal with
CONFIG_WERROR):
sound/soc/fsl/lpc3xxx-i2s.c:326:47: error: variable 'ret' is uninitialized when used here [-Werror,-Wuninitialized]
326 | "failed to init register map: %d\n", ret);
| ^~~
sound/soc/fsl/lpc3xxx-i2s.c:310:9: note: initialize the variable 'ret' to silence this warning
310 | int ret;
| ^
| = 0
1 error generated.
One solution would be a small refactoring of the second parameter in
dev_err_probe(), PTR_ERR(i2s_info_p->regs), to be the value of ret in
the if statement. However, a nicer solution for debugging purposes,
which is the point of this statement, would be to use the '%pe'
specifier to symbolically print the error pointer value. Do so, which
eliminates the uninitialized use of ret, clearing up the warning.
Fixes: 0959de657a10 ("ASoC: fsl: Add i2s and pcm drivers for LPC32xx CPUs")
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
---
sound/soc/fsl/lpc3xxx-i2s.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/fsl/lpc3xxx-i2s.c b/sound/soc/fsl/lpc3xxx-i2s.c
index 0e5b4d5202ff..af995ca081a3 100644
--- a/sound/soc/fsl/lpc3xxx-i2s.c
+++ b/sound/soc/fsl/lpc3xxx-i2s.c
@@ -323,7 +323,7 @@ static int lpc32xx_i2s_probe(struct platform_device *pdev)
i2s_info_p->regs = devm_regmap_init_mmio(dev, iomem, &lpc32xx_i2s_regconfig);
if (IS_ERR(i2s_info_p->regs))
return dev_err_probe(dev, PTR_ERR(i2s_info_p->regs),
- "failed to init register map: %d\n", ret);
+ "failed to init register map: %pe\n", i2s_info_p->regs);
i2s_info_p->clk = devm_clk_get(dev, NULL);
if (IS_ERR(i2s_info_p->clk))
---
base-commit: 878f4c36f9235e8a15fe0c2ecde066d92c50c8ff
change-id: 20240701-lpc32xx-asoc-fix-uninitialized-ret-4700d6d556c1
Best regards,
--
Nathan Chancellor <nathan@xxxxxxxxxx>
