diff options
| author | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-11-20 16:29:43 +0000 |
|---|---|---|
| committer | juhosg <juhosg@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-11-20 16:29:43 +0000 |
| commit | 9364d7753578d5df5362f1be7ee4a0391acdf2ea (patch) | |
| tree | f0bdddc6cbc90e27198ad27a60d88ee259754263 /target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch | |
| parent | c7120182addb4b4957b7a750c3adb76e7c6d24da (diff) | |
ar71xx: make rb750_nand driver compatible with 3.7
Also add compatibility patches for the currently
supported kernels.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34279 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch b/target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch new file mode 100644 index 0000000000..fb27194d86 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/a06-rb750_nand-add-buffer-verification.patch @@ -0,0 +1,63 @@ +--- a/drivers/mtd/nand/rb750_nand.c ++++ b/drivers/mtd/nand/rb750_nand.c +@@ -110,7 +110,8 @@ static void rb750_nand_write(const u8 *b + __raw_readl(base + AR71XX_GPIO_REG_OE); + } + +-static void rb750_nand_read(u8 *read_buf, unsigned len) ++static int rb750_nand_read_verify(u8 *read_buf, unsigned len, ++ const u8 *verify_buf) + { + void __iomem *base = ath79_gpio_base; + unsigned i; +@@ -130,8 +131,13 @@ static void rb750_nand_read(u8 *read_buf + /* deactivate RE line */ + __raw_writel(RB750_NAND_NRE, base + AR71XX_GPIO_REG_SET); + +- read_buf[i] = data; ++ if (read_buf) ++ read_buf[i] = data; ++ else if (verify_buf && verify_buf[i] != data) ++ return -EFAULT; + } ++ ++ return 0; + } + + static void rb750_nand_select_chip(struct mtd_info *mtd, int chip) +@@ -206,13 +212,13 @@ static void rb750_nand_cmd_ctrl(struct m + static u8 rb750_nand_read_byte(struct mtd_info *mtd) + { + u8 data = 0; +- rb750_nand_read(&data, 1); ++ rb750_nand_read_verify(&data, 1, NULL); + return data; + } + + static void rb750_nand_read_buf(struct mtd_info *mtd, u8 *buf, int len) + { +- rb750_nand_read(buf, len); ++ rb750_nand_read_verify(buf, len, NULL); + } + + static void rb750_nand_write_buf(struct mtd_info *mtd, const u8 *buf, int len) +@@ -220,6 +226,11 @@ static void rb750_nand_write_buf(struct + rb750_nand_write(buf, len); + } + ++static int rb750_nand_verify_buf(struct mtd_info *mtd, const u8 *buf, int len) ++{ ++ return rb750_nand_read_verify(NULL, len, buf); ++} ++ + static void __init rb750_nand_gpio_init(struct rb750_nand_info *info) + { + void __iomem *base = ath79_gpio_base; +@@ -274,6 +285,7 @@ static int __devinit rb750_nand_probe(st + info->chip.read_byte = rb750_nand_read_byte; + info->chip.write_buf = rb750_nand_write_buf; + info->chip.read_buf = rb750_nand_read_buf; ++ info->chip.verify_buf = rb750_nand_verify_buf; + + info->chip.chip_delay = 25; + info->chip.ecc.mode = NAND_ECC_SOFT; |