kernel: remove support for kernel 4.9

[openwrt/staging/dedeckeh.git] / target / linux / generic / pending-4.9 / 450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch

diff --git a/target/linux/generic/pending-4.9/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch b/target/linux/generic/pending-4.9/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch
deleted file mode 100644 (file)
index feaf8cb..0000000
--- a/target/linux/generic/pending-4.9/450-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
-@@ -155,9 +155,11 @@ static ssize_t m25p80_read(struct spi_no
-               msg.data_nbits = m25p80_rx_nbits(nor);
- 
-               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);