FAILED: patch "[PATCH] watchdog: iTCO_wdt: Fix detection of SMI-off case" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From aec42642d91fc86ddc03e97f0139c6c34ee6b6b1 Mon Sep 17 00:00:00 2001
From: Jan Kiszka <[email protected]>
Date: Mon, 26 Jul 2021 13:46:13 +0200
Subject: [PATCH] watchdog: iTCO_wdt: Fix detection of SMI-off case
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Obviously, the test needs to run against the register content, not its address.

index b3f604669e2c..643c6c2d0b72 100644
@@ -362,7 +362,7 @@ static int iTCO_wdt_set_timeout(struct watchdog_device *wd_dev, unsigned int t)
 	 * Otherwise, the BIOS generally reboots when the SMI triggers.
 	 */
 	if (p->smi_res &&
-	    (SMI_EN(p) & (TCO_EN | GBL_SMI_EN)) != (TCO_EN | GBL_SMI_EN))
+	    (inl(SMI_EN(p)) & (TCO_EN | GBL_SMI_EN)) != (TCO_EN | GBL_SMI_EN))
 		tmrval /= 2;
 
 	/* from the specs: */