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FAILED: patch "[PATCH] mmc: core: Fix ambiguous TRIM and DISCARD arg" failed to apply to 4.19-stable tree

PATCH [email protected] 1 participant 1 message Dec 3, 2022

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Stable branch MMC, SD and SDIO
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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]>.

Possible dependencies:

489d144563f2 ("mmc: core: Fix ambiguous TRIM and DISCARD arg") bc47e2f6f9e2 ("mmc: core: Add discard support to sd") 01904ff77676 ("mmc: core: Calculate the discard arg only once")

thanks,

greg k-h

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

From 489d144563f23911262a652234b80c70c89c978b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20L=C3=B6hle?= <[email protected]>
Date: Thu, 17 Nov 2022 14:42:09 +0000
Subject: [PATCH] mmc: core: Fix ambiguous TRIM and DISCARD arg

Clean up the MMC_TRIM_ARGS define that became ambiguous with DISCARD introduction. While at it, let's fix one usage where MMC_TRIM_ARGS falsely included DISCARD too.

Fixes b3bf915308ca ("mmc: core: new discard feature support at eMMC v4.5")
Signed-off-by Christian Loehle <[email protected]>
Acked-by Adrian Hunter <[email protected]>
Cc [email protected]
Link https://lore.kernel.org/r/[email protected] open here
Signed-off-by Ulf Hansson <[email protected]>
drivers/mmc/core/core.c +7 -2
index c5de202f530a..de1cc9e1ae57 100644
@@ -1484,6 +1484,11 @@ void mmc_init_erase(struct mmc_card *card)
 		card->pref_erase = 0;
 }
 
+static bool is_trim_arg(unsigned int arg)
+{
+	return (arg & MMC_TRIM_OR_DISCARD_ARGS) && arg != MMC_DISCARD_ARG;
+}
+
 static unsigned int mmc_mmc_erase_timeout(struct mmc_card *card,
 				          unsigned int arg, unsigned int qty)
 {

@@ -1766,7 +1771,7 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
 	    !(card->ext_csd.sec_feature_support & EXT_CSD_SEC_ER_EN))
 		return -EOPNOTSUPP;
 
-	if (mmc_card_mmc(card) && (arg & MMC_TRIM_ARGS) &&
+	if (mmc_card_mmc(card) && is_trim_arg(arg) &&
 	    !(card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN))
 		return -EOPNOTSUPP;
 

@@ -1796,7 +1801,7 @@ int mmc_erase(struct mmc_card *card, unsigned int from, unsigned int nr,
 	 * identified by the card->eg_boundary flag.
 	 */
 	rem = card->erase_size - (from % card->erase_size);
-	if ((arg & MMC_TRIM_ARGS) && (card->eg_boundary) && (nr > rem)) {
+	if ((arg & MMC_TRIM_OR_DISCARD_ARGS) && card->eg_boundary && nr > rem) {
 		err = mmc_do_erase(card, from, from + rem - 1, arg);
 		from += rem;
 		if ((err) || (to <= from))
include/linux/mmc/mmc.h +1 -1
index 9c50bc40f8ff..6f7993803ee7 100644
@@ -451,7 +451,7 @@ static inline bool mmc_ready_for_data(u32 status)
 #define MMC_SECURE_TRIM1_ARG		0x80000001
 #define MMC_SECURE_TRIM2_ARG		0x80008000
 #define MMC_SECURE_ARGS			0x80000000
-#define MMC_TRIM_ARGS			0x00008001
+#define MMC_TRIM_OR_DISCARD_ARGS	0x00008003
 
 #define mmc_driver_type_mask(n)		(1 << (n))