diff options
Diffstat (limited to 'target/linux/generic/pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch')
| -rw-r--r-- | target/linux/generic/pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/target/linux/generic/pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch b/target/linux/generic/pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch deleted file mode 100644 index accd63df58..0000000000 --- a/target/linux/generic/pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch +++ /dev/null @@ -1,36 +0,0 @@ -From: Felix Fietkau <nbd@nbd.name> -Date: Fri, 23 Feb 2018 17:12:16 +0100 -Subject: [PATCH] mtd: m25p80: allow fallback from spi_flash_read to regular - SPI transfer - -Some flash controllers, e.g. on the ath79 platform can support a fast -flash read via memory mapping, but only if the flash chip is in -3-byte address mode. - -Since spi_flash_read_supported does not have access to the same data as -spi_flash_read, the driver can't detect an unsupported call until m25p80 -has decided to use spi_flash_read. - -Allow the driver to indicate a fallback to a regular SPI transfer by -returning -EOPNOTSUPP - -Signed-off-by: Felix Fietkau <nbd@nbd.name> ---- - ---- a/drivers/mtd/devices/m25p80.c -+++ b/drivers/mtd/devices/m25p80.c -@@ -170,9 +170,11 @@ static ssize_t m25p80_read(struct spi_no - msg.data_nbits = data_nbits; - - ret = spi_flash_read(spi, &msg); -- if (ret < 0) -- return ret; -- return msg.retlen; -+ if (ret != -EOPNOTSUPP) { -+ if (ret < 0) -+ return ret; -+ return msg.retlen; -+ } - } - - spi_message_init(&m); |