diff options
Diffstat (limited to 'target/linux/layerscape/patches-4.4/1093-mtd-spi-nor-check-return-value-from-read-write.patch')
-rw-r--r-- | target/linux/layerscape/patches-4.4/1093-mtd-spi-nor-check-return-value-from-read-write.patch | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/target/linux/layerscape/patches-4.4/1093-mtd-spi-nor-check-return-value-from-read-write.patch b/target/linux/layerscape/patches-4.4/1093-mtd-spi-nor-check-return-value-from-read-write.patch deleted file mode 100644 index 85a231515f..0000000000 --- a/target/linux/layerscape/patches-4.4/1093-mtd-spi-nor-check-return-value-from-read-write.patch +++ /dev/null @@ -1,127 +0,0 @@ -From 8527843351169d999995d331bbdad75560ccafb2 Mon Sep 17 00:00:00 2001 -From: Michal Suchanek <hramrach@gmail.com> -Date: Wed, 2 Dec 2015 10:38:20 +0000 -Subject: [PATCH 093/113] mtd: spi-nor: check return value from read/write - -SPI NOR hardware drivers now return useful value from their read/write -functions so check them. - -Signed-off-by: Michal Suchanek <hramrach@gmail.com> -Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@freescale.com> ---- - drivers/mtd/spi-nor/spi-nor.c | 50 +++++++++++++++++++++++++++++------------ - 1 file changed, 36 insertions(+), 14 deletions(-) - ---- a/drivers/mtd/spi-nor/spi-nor.c -+++ b/drivers/mtd/spi-nor/spi-nor.c -@@ -924,7 +924,10 @@ static int spi_nor_read(struct mtd_info - ret = nor->read(nor, from, len, retlen, buf); - - spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ); -- return ret; -+ if (ret < 0) -+ return ret; -+ -+ return 0; - } - - static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, -@@ -950,10 +953,14 @@ static int sst_write(struct mtd_info *mt - nor->program_opcode = SPINOR_OP_BP; - - /* write one byte. */ -- nor->write(nor, to, 1, retlen, buf); -+ ret = nor->write(nor, to, 1, retlen, buf); -+ if (ret < 0) -+ goto sst_write_err; -+ WARN(ret != 1, "While writing 1 byte written %i bytes\n", -+ (int)ret); - ret = spi_nor_wait_till_ready(nor); - if (ret) -- goto time_out; -+ goto sst_write_err; - } - to += actual; - -@@ -962,10 +969,14 @@ static int sst_write(struct mtd_info *mt - nor->program_opcode = SPINOR_OP_AAI_WP; - - /* write two bytes. */ -- nor->write(nor, to, 2, retlen, buf + actual); -+ ret = nor->write(nor, to, 2, retlen, buf + actual); -+ if (ret < 0) -+ goto sst_write_err; -+ WARN(ret != 2, "While writing 2 bytes written %i bytes\n", -+ (int)ret); - ret = spi_nor_wait_till_ready(nor); - if (ret) -- goto time_out; -+ goto sst_write_err; - to += 2; - nor->sst_write_second = true; - } -@@ -974,21 +985,24 @@ static int sst_write(struct mtd_info *mt - write_disable(nor); - ret = spi_nor_wait_till_ready(nor); - if (ret) -- goto time_out; -+ goto sst_write_err; - - /* Write out trailing byte if it exists. */ - if (actual != len) { - write_enable(nor); - - nor->program_opcode = SPINOR_OP_BP; -- nor->write(nor, to, 1, retlen, buf + actual); -- -+ ret = nor->write(nor, to, 1, retlen, buf + actual); -+ if (ret < 0) -+ goto sst_write_err; -+ WARN(ret != 1, "While writing 1 byte written %i bytes\n", -+ (int)ret); - ret = spi_nor_wait_till_ready(nor); - if (ret) -- goto time_out; -+ goto sst_write_err; - write_disable(nor); - } --time_out: -+sst_write_err: - spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_WRITE); - return ret; - } -@@ -1017,14 +1031,18 @@ static int spi_nor_write(struct mtd_info - - /* do all the bytes fit onto one page? */ - if (page_offset + len <= nor->page_size) { -- nor->write(nor, to, len, retlen, buf); -+ ret = nor->write(nor, to, len, retlen, buf); -+ if (ret < 0) -+ goto write_err; - } else { - /* the size of data remaining on the first page */ - page_size = nor->page_size - page_offset; -- nor->write(nor, to, page_size, retlen, buf); -+ ret = nor->write(nor, to, page_size, retlen, buf); -+ if (ret < 0) -+ goto write_err; - - /* write everything in nor->page_size chunks */ -- for (i = page_size; i < len; i += page_size) { -+ for (i = ret; i < len; ) { - page_size = len - i; - if (page_size > nor->page_size) - page_size = nor->page_size; -@@ -1035,7 +1053,11 @@ static int spi_nor_write(struct mtd_info - - write_enable(nor); - -- nor->write(nor, to + i, page_size, retlen, buf + i); -+ ret = nor->write(nor, to + i, page_size, retlen, -+ buf + i); -+ if (ret < 0) -+ goto write_err; -+ i += ret; - } - } - |