Patch "mtd: rawnand: Increment IFC_TIMEOUT_MSECS for nand controller response" has been added to the 5.15-stable tree

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

    mtd: rawnand: Increment IFC_TIMEOUT_MSECS for nand controller response

to the 5.15-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:
     mtd-rawnand-increment-ifc_timeout_msecs-for-nand-con.patch
and it can be found in the queue-5.15 subdirectory.

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



commit a42ee8314038b2ef34da6935262131b072d8dab0
Author: Ronald Monthero <debug.penguin32@xxxxxxxxx>
Date:   Sat Nov 18 18:31:51 2023 +1000

    mtd: rawnand: Increment IFC_TIMEOUT_MSECS for nand controller response
    
    [ Upstream commit 923fb6238cb3ac529aa2bf13b3b1e53762186a8b ]
    
    Under heavy load it is likely that the controller is done
    with its own task but the thread unlocking the wait is not
    scheduled in time. Increasing IFC_TIMEOUT_MSECS allows the
    controller to respond within allowable timeslice of 1 sec.
    
    fsl,ifc-nand 7e800000.nand: Controller is not responding
    
    [<804b2047>] (nand_get_device) from [<804b5335>] (nand_write_oob+0x1b/0x4a)
    [<804b5335>] (nand_write_oob) from [<804a3585>] (mtd_write+0x41/0x5c)
    [<804a3585>] (mtd_write) from [<804c1d47>] (ubi_io_write+0x17f/0x22c)
    [<804c1d47>] (ubi_io_write) from [<804c047b>] (ubi_eba_write_leb+0x5b/0x1d0)
    
    Fixes: 82771882d960 ("NAND Machine support for Integrated Flash Controller")
    Reviewed-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
    Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
    Signed-off-by: Ronald Monthero <debug.penguin32@xxxxxxxxx>
    Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
    Link: https://lore.kernel.org/linux-mtd/20231118083156.776887-1-debug.penguin32@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/mtd/nand/raw/fsl_ifc_nand.c b/drivers/mtd/nand/raw/fsl_ifc_nand.c
index 02d500176838..bea1a7d3edd7 100644
--- a/drivers/mtd/nand/raw/fsl_ifc_nand.c
+++ b/drivers/mtd/nand/raw/fsl_ifc_nand.c
@@ -20,7 +20,7 @@
 
 #define ERR_BYTE		0xFF /* Value returned for read
 					bytes when read failed	*/
-#define IFC_TIMEOUT_MSECS	500  /* Maximum number of mSecs to wait
+#define IFC_TIMEOUT_MSECS	1000 /* Maximum timeout to wait
 					for IFC NAND Machine	*/
 
 struct fsl_ifc_ctrl;




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