linux-kernel - [PATCH 5.14 137/151] platform/x86: intel_scu

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Message-Id: <20211018132345.119870795@linuxfoundation.org>
Date:   Mon, 18 Oct 2021 15:25:16 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>
Subject: [PATCH 5.14 137/151] platform/x86: intel_scu_ipc: Fix busy loop expiry time

From: Prashant Malani <pmalani@...omium.org>

commit 41512e4dc0b84525495e784295092592adb87f1b upstream.

The macro IPC_TIMEOUT is already in jiffies (it is also used like that
elsewhere in the file when calling wait_for_completion_timeout()). Don’t
convert it using helper functions for the purposes of calculating the
busy loop expiry time.

Fixes: e7b7ab3847c9 (“platform/x86: intel_scu_ipc: Sleeping is fine when polling”)
Signed-off-by: Prashant Malani <pmalani@...omium.org>
Cc: Benson Leung <bleung@...omium.org>
Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
Link: https://lore.kernel.org/r/20210928101932.2543937-2-pmalani@chromium.org
Signed-off-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/platform/x86/intel_scu_ipc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/x86/intel_scu_ipc.c
+++ b/drivers/platform/x86/intel_scu_ipc.c
@@ -232,7 +232,7 @@ static inline u32 ipc_data_readl(struct
 /* Wait till scu status is busy */
 static inline int busy_loop(struct intel_scu_ipc_dev *scu)
 {
-	unsigned long end = jiffies + msecs_to_jiffies(IPC_TIMEOUT);
+	unsigned long end = jiffies + IPC_TIMEOUT;
 
 	do {
 		u32 status;