linux-kernel - [PATCH 5.4 04/80] mmc: core: Drop check for mmc_card_is_removable() in mmc

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Message-Id: <20191219183034.205788544@linuxfoundation.org>
Date:   Thu, 19 Dec 2019 19:33:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Douglas Anderson <dianders@...omium.org>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH 5.4 04/80] mmc: core: Drop check for mmc_card_is_removable() in mmc_rescan()

From: Ulf Hansson <ulf.hansson@...aro.org>

commit 99b4ddd8b76a6f60a8c2b3775849d65d21a418fc upstream.

Upfront in mmc_rescan() we use the host->rescan_entered flag, to allow
scanning only once for non-removable cards. Therefore, it's also not
possible that we can have a corresponding card bus attached (host->bus_ops
is NULL), when we are scanning non-removable cards.

For this reason, let' drop the check for mmc_card_is_removable() as it's
redundant.

Reviewed-by: Douglas Anderson <dianders@...omium.org>
Tested-by: Douglas Anderson <dianders@...omium.org>
Cc: stable@...r.kernel.org # v5.4+
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/mmc/core/core.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2297,11 +2297,8 @@ void mmc_rescan(struct work_struct *work
 
 	mmc_bus_get(host);
 
-	/*
-	 * if there is a _removable_ card registered, check whether it is
-	 * still present
-	 */
-	if (host->bus_ops && !host->bus_dead && mmc_card_is_removable(host))
+	/* Verify a registered card to be functional, else remove it. */
+	if (host->bus_ops && !host->bus_dead)
 		host->bus_ops->detect(host);
 
 	host->detect_change = 0;