6.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> commit 0419373333c2f2024966d36261fd82a453281e80 upstream. If regmap_read() returns a non-zero value, the 'val' variable can be left uninitialized. Clear it before calling regmap_read() to make sure we properly detect the clock ready bit. Fixes: 4cf9a888fd3c ("serial: max310x: Check the clock readiness") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/20240116213001.3691629-2-hugo@xxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/tty/serial/max310x.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/tty/serial/max310x.c +++ b/drivers/tty/serial/max310x.c @@ -641,7 +641,7 @@ static u32 max310x_set_ref_clk(struct de /* Wait for crystal */ if (xtal) { - unsigned int val; + unsigned int val = 0; msleep(10); regmap_read(s->regmap, MAX310X_STS_IRQSTS_REG, &val); if (!(val & MAX310X_STS_CLKREADY_BIT)) {