target/linux/ar71xx/patches-4.1/464-spi-ath79-fix-fast-flash-read.patch

   1 --- a/drivers/mtd/devices/m25p80.c
   2 +++ b/drivers/mtd/devices/m25p80.c
   3 @@ -137,6 +137,9 @@ static int m25p80_read(struct spi_nor *n
   4         flash->command[0] = nor->read_opcode;
   5         m25p_addr2cmd(nor, from, flash->command);
   6
   7 +       if (dummy == 1)
   8 +               t[0].dummy = true;
   9 +
  10         t[0].type = SPI_TRANSFER_FLASH_READ_CMD;
  11         t[0].tx_buf = flash->command;
  12         t[0].len = m25p_cmdsz(nor) + dummy;
  13 --- a/drivers/spi/spi-ath79.c
  14 +++ b/drivers/spi/spi-ath79.c
  15 @@ -260,6 +260,10 @@ static int ath79_spi_do_read_flash_cmd(s
  16         sp->read_addr = 0;
  17
  18         len = t->len - 1;
  19 +
  20 +       if (t->dummy)
  21 +               len -= 1;
  22 +
  23         p = t->tx_buf;
  24
  25         while (len--) {
  26 --- a/include/linux/spi/spi.h
  27 +++ b/include/linux/spi/spi.h
  28 @@ -633,6 +633,7 @@ struct spi_transfer {
  29         u16             delay_usecs;
  30         u32             speed_hz;
  31         enum spi_transfer_type type;
  32 +       bool dummy;
  33
  34         struct list_head transfer_list;
  35  };