spi: spi-mem: Fix Dual/Quad modes on Octal-capable devices

[ Upstream commit 80300a7d5f2d7178335652f41d2e55ba898b4ec1 ]

Currently buswidths 2 and 4 are rejected for a device that advertises
Octal capabilities.  Allow these buswidths, just like is done for
buswidth 2 and Quad-capable devices.

Fixes: b12a084c8729ef42 ("spi: spi-mem: add support for octal mode I/O data transfer")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200416101418.14379-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c
index 9f0fa9f..de0ba3e 100644 (file)
--- a/drivers/spi/spi-mem.c
+++ b/drivers/spi/spi-mem.c
@@ -108,15 +108,17 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx)
                return 0;
 
        case 2:
-               if ((tx && (mode & (SPI_TX_DUAL | SPI_TX_QUAD))) ||
-                   (!tx && (mode & (SPI_RX_DUAL | SPI_RX_QUAD))))
+               if ((tx &&
+                    (mode & (SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL))) ||
+                   (!tx &&
+                    (mode & (SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL))))
                        return 0;
 
                break;
 
        case 4:
-               if ((tx && (mode & SPI_TX_QUAD)) ||
-                   (!tx && (mode & SPI_RX_QUAD)))
+               if ((tx && (mode & (SPI_TX_QUAD | SPI_TX_OCTAL))) ||
+                   (!tx && (mode & (SPI_RX_QUAD | SPI_RX_OCTAL))))
                        return 0;
 
                break;