brcm63xx: remove linux 4.4 support

[openwrt/openwrt.git] / target / linux / brcm63xx / patches-4.4 / 000-4.9-01-spi-introduce-max_message_size-hook-in-spi_master.patch

diff --git a/target/linux/brcm63xx/patches-4.4/000-4.9-01-spi-introduce-max_message_size-hook-in-spi_master.patch b/target/linux/brcm63xx/patches-4.4/000-4.9-01-spi-introduce-max_message_size-hook-in-spi_master.patch
deleted file mode 100644 (file)
index 76a66a3..0000000
--- a/target/linux/brcm63xx/patches-4.4/000-4.9-01-spi-introduce-max_message_size-hook-in-spi_master.patch
+++ /dev/null
@@ -1,73 +0,0 @@
-From 5090cc6ae2f79ee779e5faf7c8a28edf42b7d738 Mon Sep 17 00:00:00 2001
-From: Heiner Kallweit <hkallweit1@gmail.com>
-Date: Wed, 17 Aug 2016 21:08:01 +0200
-Subject: [PATCH] spi: introduce max_message_size hook in spi_master
-
-Recently a maximum transfer size was was introduced in struct spi_master.
-However there are also spi controllers with a maximum message size, e.g.
-fsl-espi has a max message size of 64KB.
-Introduce a hook max_message_size to deal with such limitations.
-
-Also make sure that spi_max_transfer_size doesn't return greater values
-than spi_max_message_size, even if hook max_transfer_size is not set.
-
-Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
-Signed-off-by: Mark Brown <broonie@kernel.org>
----
- include/linux/spi/spi.h | 25 +++++++++++++++++++++----
- 1 file changed, 21 insertions(+), 4 deletions(-)
-
---- a/include/linux/spi/spi.h
-+++ b/include/linux/spi/spi.h
-@@ -304,6 +304,8 @@ static inline void spi_unregister_driver
-  * @min_speed_hz: Lowest supported transfer speed
-  * @max_speed_hz: Highest supported transfer speed
-  * @flags: other constraints relevant to this driver
-+ * @max_message_size: function that returns the max message size for
-+ *    a &spi_device; may be %NULL, so the default %SIZE_MAX will be used.
-  * @bus_lock_spinlock: spinlock for SPI bus locking
-  * @bus_lock_mutex: mutex for SPI bus locking
-  * @bus_lock_flag: indicates that the SPI bus is locked for exclusive use
-@@ -429,10 +431,11 @@ struct spi_master {
- #define SPI_MASTER_MUST_TX      BIT(4)                /* requires tx */
- 
-       /*
--       * on some hardware transfer size may be constrained
-+       * on some hardware transfer / message size may be constrained
-        * the limit may depend on device transfer settings
-        */
-       size_t (*max_transfer_size)(struct spi_device *spi);
-+      size_t (*max_message_size)(struct spi_device *spi);
- 
-       /* lock and mutex for SPI bus locking */
-       spinlock_t              bus_lock_spinlock;
-@@ -844,12 +847,26 @@ extern int spi_async_locked(struct spi_d
-                           struct spi_message *message);
- 
- static inline size_t
--spi_max_transfer_size(struct spi_device *spi)
-+spi_max_message_size(struct spi_device *spi)
- {
-       struct spi_master *master = spi->master;
--      if (!master->max_transfer_size)
-+      if (!master->max_message_size)
-               return SIZE_MAX;
--      return master->max_transfer_size(spi);
-+      return master->max_message_size(spi);
-+}
-+
-+static inline size_t
-+spi_max_transfer_size(struct spi_device *spi)
-+{
-+      struct spi_master *master = spi->master;
-+      size_t tr_max = SIZE_MAX;
-+      size_t msg_max = spi_max_message_size(spi);
-+
-+      if (master->max_transfer_size)
-+              tr_max = master->max_transfer_size(spi);
-+
-+      /* transfer size limit must not be greater than messsage size limit */
-+      return min(tr_max, msg_max);
- }
- 
- /*---------------------------------------------------------------------------*/