watchdog: msc313e: Fix undefined behavior

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readw() returns a u16.  Left shifting a u16 by 16 bits yields undefined
behavior.

Cast to u32 explicitly before the shift.

Fixes: ffd264bd15 ("watchdog: msc313e: Check if the WDT was running at boot")
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Link: https://patch.msgid.link/20260828161348.13212-7-tzungbi@kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

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Tzung-Bi Shih 2026-08-29 00:13:45 +08:00 • committed by Guenter Roeck

parent 4f6817c9ef

commit ab390021b2

1 changed files with 11 additions and 1 deletions

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12

drivers/watchdog/msc313e_wdt.c

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