Patch "spi: spi-microchip-core: Fix the number of chip selects supported" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    spi: spi-microchip-core: Fix the number of chip selects supported

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     spi-spi-microchip-core-fix-the-number-of-chip-select.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 85f9d0564a12042b1ea10c4b9ae7a8e6c9bc3ec9
Author: Prajna Rajendra Kumar <prajna.rajendrakumar@xxxxxxxxxxxxx>
Date:   Tue May 14 11:45:07 2024 +0100

    spi: spi-microchip-core: Fix the number of chip selects supported
    
    [ Upstream commit a7ed3a11202d90939a3d00ffcc8cf50703cb7b35 ]
    
    The SPI "hard" controller in PolarFire SoC has eight CS lines, but only
    one CS line is wired. When the 'num-cs' property is not specified in
    the device tree, the driver defaults to the MAX_CS value, which has
    been fixed to 1 to match the hardware configuration; however, when the
    'num-cs' property is explicitly defined in the device tree, it
    overrides the default value.
    
    Fixes: 9ac8d17694b6 ("spi: add support for microchip fpga spi controllers")
    Signed-off-by: Prajna Rajendra Kumar <prajna.rajendrakumar@xxxxxxxxxxxxx>
    Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
    Link: https://msgid.link/r/20240514104508.938448-3-prajna.rajendrakumar@xxxxxxxxxxxxx
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/spi/spi-microchip-core.c b/drivers/spi/spi-microchip-core.c
index d352844c798c9..d4c08d3668741 100644
--- a/drivers/spi/spi-microchip-core.c
+++ b/drivers/spi/spi-microchip-core.c
@@ -21,7 +21,7 @@
 #include <linux/spi/spi.h>
 
 #define MAX_LEN				(0xffff)
-#define MAX_CS				(8)
+#define MAX_CS				(1)
 #define DEFAULT_FRAMESIZE		(8)
 #define FIFO_DEPTH			(32)
 #define CLK_GEN_MODE1_MAX		(255)




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