+++ /dev/null
-From f1f811410af297c848e9ec17eaa280d190fdce10 Mon Sep 17 00:00:00 2001
-From: Mauri Sandberg <sandberg@mailfence.com>
-Date: Tue, 23 Feb 2021 18:09:31 +0200
-Subject: [PATCH] mtd: cfi_cmdset_0002: AMD chip 0x2201 - write words
-
-Buffer writes do not work with AMD chip 0x2201. The chip in question
-is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1]
-talks about writing buffers being possible. While waiting for a neater
-solution resort to writing word-sized chunks only.
-
-Without the patch kernel logs will be flooded with entries like below:
-
-jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
-jffs2_build_filesystem(): unlocking the mtd device...
-done.
-jffs2_build_filesystem(): erasing all blocks after the end marker...
-MTD do_write_buffer_wait(): software timeout, address:0x01ec000a.
-jffs2: Write clean marker to block at 0x01920000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01e2000a.
-jffs2: Write clean marker to block at 0x01880000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01e0000a.
-jffs2: Write clean marker to block at 0x01860000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01dc000a.
-jffs2: Write clean marker to block at 0x01820000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01da000a.
-jffs2: Write clean marker to block at 0x01800000 failed: -5
-...
-
-Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16.
-
-[1] https://www.cypress.com/file/219941/download
-or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1
-
-Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
----
- drivers/mtd/chips/cfi_cmdset_0002.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/drivers/mtd/chips/cfi_cmdset_0002.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -272,6 +272,10 @@ static void fixup_use_write_buffers(stru
- {
- struct map_info *map = mtd->priv;
- struct cfi_private *cfi = map->fldrv_priv;
-+
-+ if ((cfi->mfr == CFI_MFR_AMD) && (cfi->id == 0x2201))
-+ return;
-+
- if (cfi->cfiq->BufWriteTimeoutTyp) {
- pr_debug("Using buffer write method\n");
- mtd->_write = cfi_amdstd_write_buffers;
+++ /dev/null
-From f1f811410af297c848e9ec17eaa280d190fdce10 Mon Sep 17 00:00:00 2001
-From: Mauri Sandberg <sandberg@mailfence.com>
-Date: Tue, 23 Feb 2021 18:09:31 +0200
-Subject: [PATCH] mtd: cfi_cmdset_0002: AMD chip 0x2201 - write words
-
-Buffer writes do not work with AMD chip 0x2201. The chip in question
-is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1]
-talks about writing buffers being possible. While waiting for a neater
-solution resort to writing word-sized chunks only.
-
-Without the patch kernel logs will be flooded with entries like below:
-
-jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
-jffs2_build_filesystem(): unlocking the mtd device...
-done.
-jffs2_build_filesystem(): erasing all blocks after the end marker...
-MTD do_write_buffer_wait(): software timeout, address:0x01ec000a.
-jffs2: Write clean marker to block at 0x01920000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01e2000a.
-jffs2: Write clean marker to block at 0x01880000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01e0000a.
-jffs2: Write clean marker to block at 0x01860000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01dc000a.
-jffs2: Write clean marker to block at 0x01820000 failed: -5
-MTD do_write_buffer_wait(): software timeout, address:0x01da000a.
-jffs2: Write clean marker to block at 0x01800000 failed: -5
-...
-
-Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16.
-
-[1] https://www.cypress.com/file/219941/download
-or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1
-
-Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
----
- drivers/mtd/chips/cfi_cmdset_0002.c | 4 ++++
- 1 file changed, 4 insertions(+)
-
---- a/drivers/mtd/chips/cfi_cmdset_0002.c
-+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -272,6 +272,10 @@ static void fixup_use_write_buffers(stru
- {
- struct map_info *map = mtd->priv;
- struct cfi_private *cfi = map->fldrv_priv;
-+
-+ if ((cfi->mfr == CFI_MFR_AMD) && (cfi->id == 0x2201))
-+ return;
-+
- if (cfi->cfiq->BufWriteTimeoutTyp) {
- pr_debug("Using buffer write method\n");
- mtd->_write = cfi_amdstd_write_buffers;
--- /dev/null
+From 7e4404113686868858a34210c28ae122e967aa64 Mon Sep 17 00:00:00 2001
+From: Mauri Sandberg <sandberg@mailfence.com>
+Date: Tue, 9 Mar 2021 19:48:59 +0200
+Subject: [PATCH] mtd: cfi_cmdset_0002: Disable buffered writes for AMD chip
+ 0x2201
+
+Buffer writes do not work with AMD chip 0x2201. The chip in question
+is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1]
+talks about writing buffers being possible. While waiting for a neater
+solution resort to writing word-sized chunks only.
+
+Without the patch kernel logs will be flooded with entries like below:
+
+jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
+jffs2_build_filesystem(): unlocking the mtd device...
+done.
+jffs2_build_filesystem(): erasing all blocks after the end marker...
+MTD do_write_buffer_wait(): software timeout, address:0x01ec000a.
+jffs2: Write clean marker to block at 0x01920000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01e2000a.
+jffs2: Write clean marker to block at 0x01880000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01e0000a.
+jffs2: Write clean marker to block at 0x01860000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01dc000a.
+jffs2: Write clean marker to block at 0x01820000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01da000a.
+jffs2: Write clean marker to block at 0x01800000 failed: -5
+...
+
+Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16.
+
+[1] https://www.cypress.com/file/219941/download
+or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1
+
+Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
+Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
+Link: https://lore.kernel.org/r/20210309174859.362060-1-sandberg@mailfence.com
+---
+ drivers/mtd/chips/cfi_cmdset_0002.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -272,6 +272,10 @@ static void fixup_use_write_buffers(stru
+ {
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
++
++ if (cfi->mfr == CFI_MFR_AMD && cfi->id == 0x2201)
++ return;
++
+ if (cfi->cfiq->BufWriteTimeoutTyp) {
+ pr_debug("Using buffer write method\n");
+ mtd->_write = cfi_amdstd_write_buffers;
--- /dev/null
+From 7e4404113686868858a34210c28ae122e967aa64 Mon Sep 17 00:00:00 2001
+From: Mauri Sandberg <sandberg@mailfence.com>
+Date: Tue, 9 Mar 2021 19:48:59 +0200
+Subject: [PATCH] mtd: cfi_cmdset_0002: Disable buffered writes for AMD chip
+ 0x2201
+
+Buffer writes do not work with AMD chip 0x2201. The chip in question
+is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1]
+talks about writing buffers being possible. While waiting for a neater
+solution resort to writing word-sized chunks only.
+
+Without the patch kernel logs will be flooded with entries like below:
+
+jffs2_scan_eraseblock(): End of filesystem marker found at 0x0
+jffs2_build_filesystem(): unlocking the mtd device...
+done.
+jffs2_build_filesystem(): erasing all blocks after the end marker...
+MTD do_write_buffer_wait(): software timeout, address:0x01ec000a.
+jffs2: Write clean marker to block at 0x01920000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01e2000a.
+jffs2: Write clean marker to block at 0x01880000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01e0000a.
+jffs2: Write clean marker to block at 0x01860000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01dc000a.
+jffs2: Write clean marker to block at 0x01820000 failed: -5
+MTD do_write_buffer_wait(): software timeout, address:0x01da000a.
+jffs2: Write clean marker to block at 0x01800000 failed: -5
+...
+
+Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16.
+
+[1] https://www.cypress.com/file/219941/download
+or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1
+
+Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
+Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
+Link: https://lore.kernel.org/r/20210309174859.362060-1-sandberg@mailfence.com
+---
+ drivers/mtd/chips/cfi_cmdset_0002.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -272,6 +272,10 @@ static void fixup_use_write_buffers(stru
+ {
+ struct map_info *map = mtd->priv;
+ struct cfi_private *cfi = map->fldrv_priv;
++
++ if (cfi->mfr == CFI_MFR_AMD && cfi->id == 0x2201)
++ return;
++
+ if (cfi->cfiq->BufWriteTimeoutTyp) {
+ pr_debug("Using buffer write method\n");
+ mtd->_write = cfi_amdstd_write_buffers;
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -909,7 +909,7 @@ static int get_chip(struct map_info *map
+@@ -913,7 +913,7 @@ static int get_chip(struct map_info *map
return 0;
case FL_ERASING:
1 file changed, 1 insertion(+)
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -2053,6 +2053,7 @@ static int __xipram do_write_buffer(stru
+@@ -2057,6 +2057,7 @@ static int __xipram do_write_buffer(stru
/* Write Buffer Load */
map_write(map, CMD(0x25), cmd_adr);
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -909,7 +909,7 @@ static int get_chip(struct map_info *map
+@@ -913,7 +913,7 @@ static int get_chip(struct map_info *map
return 0;
case FL_ERASING:
1 file changed, 1 insertion(+)
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
-@@ -2054,6 +2054,7 @@ static int __xipram do_write_buffer(stru
+@@ -2058,6 +2058,7 @@ static int __xipram do_write_buffer(stru
/* Write Buffer Load */
map_write(map, CMD(0x25), cmd_adr);