Patch "watchdog: sbsa_wdog: Make sure the timeout programming is within the limits" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    watchdog: sbsa_wdog: Make sure the timeout programming is within the limits

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     watchdog-sbsa_wdog-make-sure-the-timeout-programming.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit c93579b9ea742f5017265c8daea7ba471844bef3
Author: George Cherian <george.cherian@xxxxxxxxxxx>
Date:   Thu Feb 9 02:11:17 2023 +0000

    watchdog: sbsa_wdog: Make sure the timeout programming is within the limits
    
    [ Upstream commit 000987a38b53c172f435142a4026dd71378ca464 ]
    
    Make sure to honour the max_hw_heartbeat_ms while programming the timeout
    value to WOR. Clamp the timeout passed to sbsa_gwdt_set_timeout() to
    make sure the programmed value is within the permissible range.
    
    Fixes: abd3ac7902fb ("watchdog: sbsa: Support architecture version 1")
    
    Signed-off-by: George Cherian <george.cherian@xxxxxxxxxxx>
    Reviewed-by: Guenter Roeck <linux@xxxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230209021117.1512097-1-george.cherian@xxxxxxxxxxx
    Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
    Signed-off-by: Wim Van Sebroeck <wim@xxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
index 9791c74aebd48..63862803421f1 100644
--- a/drivers/watchdog/sbsa_gwdt.c
+++ b/drivers/watchdog/sbsa_gwdt.c
@@ -150,6 +150,7 @@ static int sbsa_gwdt_set_timeout(struct watchdog_device *wdd,
 	struct sbsa_gwdt *gwdt = watchdog_get_drvdata(wdd);
 
 	wdd->timeout = timeout;
+	timeout = clamp_t(unsigned int, timeout, 1, wdd->max_hw_heartbeat_ms / 1000);
 
 	if (action)
 		sbsa_gwdt_reg_write(gwdt->clk * timeout, gwdt);



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