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kernel: Move an upstreamed patch under backports

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This CFI patch was accepted upstream for 5.13. Move it away from under
ath79 and place under backports to be removed in due time.

Signed-off-by: Mauri Sandberg <sandberg@mailfence.com>
This commit is contained in:
Mauri Sandberg
2021-04-16 17:52:59 +03:00
committed by Hauke Mehrtens
parent c03e98b130
commit 4b14b42abf
6 changed files with 18 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
target/linux/generic/backport-5.10/408-v5.13-mtd-cfi_cmdset_0002-Disable-buffered-writes-for-AMD.patch Normal file
View File

@@ -0,0 +1,54 @@
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;

54
target/linux/generic/backport-5.4/408-v5.13-mtd-cfi_cmdset_0002-Disable-buffered-writes-for-AMD.patch Normal file
View File

@@ -0,0 +1,54 @@
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;

2
target/linux/generic/pending-5.10/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
View File

@@ -14,7 +14,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- 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:

2
target/linux/generic/pending-5.10/461-mtd-cfi_cmdset_0002-add-buffer-write-cmd-timeout.patch
View File

@@ -7,7 +7,7 @@ Signed-off-by: George Kashperko <george@znau.edu.ua>
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);

2
target/linux/generic/pending-5.4/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
View File

@@ -14,7 +14,7 @@ Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- 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:

2
target/linux/generic/pending-5.4/461-mtd-cfi_cmdset_0002-add-buffer-write-cmd-timeout.patch
View File

@@ -7,7 +7,7 @@ Signed-off-by: George Kashperko <george@znau.edu.ua>
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);