e41a0cafff
Signed-off-by: Zhao, Gang <gang.zhao.42@gmail.com> Signed-off-by: Felix Fietkau <nbd@openwrt.org> SVN-Revision: 42038
34 lines
793 B
Diff
34 lines
793 B
Diff
--- a/drivers/mtd/devices/m25p80.c
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+++ b/drivers/mtd/devices/m25p80.c
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@@ -530,6 +530,8 @@ static int m25p80_read(struct mtd_info *
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if (dummy < 0) {
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dev_err(&flash->spi->dev, "No valid read command supported\n");
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return -EINVAL;
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+ } else if (dummy == 1) {
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+ t[0].dummy = true;
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}
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t[0].type = SPI_TRANSFER_FLASH_READ_CMD;
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--- a/drivers/spi/spi-ath79.c
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+++ b/drivers/spi/spi-ath79.c
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@@ -262,6 +262,10 @@ static int ath79_spi_do_read_flash_cmd(s
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sp->read_addr = 0;
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len = t->len - 1;
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+
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+ if (t->dummy)
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+ len -= 1;
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+
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p = t->tx_buf;
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while (len--) {
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--- a/include/linux/spi/spi.h
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+++ b/include/linux/spi/spi.h
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@@ -598,6 +598,7 @@ struct spi_transfer {
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u16 delay_usecs;
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u32 speed_hz;
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enum spi_transfer_type type;
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+ bool dummy;
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struct list_head transfer_list;
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};
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