target/linux/brcm63xx/patches-4.4/000-4.8-10-mtd-m25p80-read-in-spi_max_transfer_size-chunks.patch

   1 From 95193796256cfce16e5d881318e15b6b04062c15 Mon Sep 17 00:00:00 2001
   2 From: Michal Suchanek <hramrach@gmail.com>
   3 Date: Thu, 5 May 2016 17:31:56 -0700
   4 Subject: [PATCH 10/10] mtd: m25p80: read in spi_max_transfer_size chunks
   5
   6 Take into account transfer size limitation of SPI master.
   7
   8 Signed-off-by: Michal Suchanek <hramrach@gmail.com>
   9 Signed-off-by: Brian Norris <computersforpeace@gmail.com>
  10 Acked-by: Michal Suchanek <hramrach@gmail.com>
  11 Tested-by: Michal Suchanek <hramrach@gmail.com>
  12 ---
  13  drivers/mtd/devices/m25p80.c | 2 +-
  14  1 file changed, 1 insertion(+), 1 deletion(-)
  15
  16 --- a/drivers/mtd/devices/m25p80.c
  17 +++ b/drivers/mtd/devices/m25p80.c
  18 @@ -172,7 +172,7 @@ static ssize_t m25p80_read(struct spi_no
  19
  20         t[1].rx_buf = buf;
  21         t[1].rx_nbits = m25p80_rx_nbits(nor);
  22 -       t[1].len = len;
  23 +       t[1].len = min(len, spi_max_transfer_size(spi));
  24         spi_message_add_tail(&t[1], &m);
  25
  26         ret = spi_sync(spi, &m);