diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.4/000-4.8-05-mtd-nxp-spifi-return-amount-of-data-transferred-or-e.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.4/000-4.8-05-mtd-nxp-spifi-return-amount-of-data-transferred-or-e.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.4/000-4.8-05-mtd-nxp-spifi-return-amount-of-data-transferred-or-e.patch b/target/linux/brcm63xx/patches-4.4/000-4.8-05-mtd-nxp-spifi-return-amount-of-data-transferred-or-e.patch new file mode 100644 index 0000000000..0458148399 --- /dev/null +++ b/target/linux/brcm63xx/patches-4.4/000-4.8-05-mtd-nxp-spifi-return-amount-of-data-transferred-or-e.patch @@ -0,0 +1,51 @@ +From bc418cd2652f47a327e27f978caa3d85f9558b09 Mon Sep 17 00:00:00 2001 +From: Brian Norris <computersforpeace@gmail.com> +Date: Thu, 5 May 2016 17:31:51 -0700 +Subject: [PATCH 05/10] mtd: nxp-spifi: return amount of data transferred or + error in read/write + +Add checking of SPI transfer errors and return them from read/write +functions. Also return the amount of data transferred. + +Signed-off-by: Brian Norris <computersforpeace@gmail.com> +--- + drivers/mtd/spi-nor/nxp-spifi.c | 13 +++++++++---- + 1 file changed, 9 insertions(+), 4 deletions(-) + +--- a/drivers/mtd/spi-nor/nxp-spifi.c ++++ b/drivers/mtd/spi-nor/nxp-spifi.c +@@ -185,7 +185,7 @@ static ssize_t nxp_spifi_read(struct spi + memcpy_fromio(buf, spifi->flash_base + from, len); + *retlen += len; + +- return 0; ++ return len; + } + + static ssize_t nxp_spifi_write(struct spi_nor *nor, loff_t to, size_t len, +@@ -194,6 +194,7 @@ static ssize_t nxp_spifi_write(struct sp + struct nxp_spifi *spifi = nor->priv; + u32 cmd; + int ret; ++ size_t i; + + ret = nxp_spifi_set_memory_mode_off(spifi); + if (ret) +@@ -209,10 +210,14 @@ static ssize_t nxp_spifi_write(struct sp + SPIFI_CMD_FRAMEFORM(spifi->nor.addr_width + 1); + writel(cmd, spifi->io_base + SPIFI_CMD); + +- while (len--) +- writeb(*buf++, spifi->io_base + SPIFI_DATA); ++ for (i = 0; i < len; i++) ++ writeb(buf[i], spifi->io_base + SPIFI_DATA); + +- return nxp_spifi_wait_for_cmd(spifi); ++ ret = nxp_spifi_wait_for_cmd(spifi); ++ if (ret) ++ return ret; ++ ++ return len; + } + + static int nxp_spifi_erase(struct spi_nor *nor, loff_t offs) |