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Revert "spi: Add check for 8-bit transfer with 8 IO mode support"

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This reverts commit 82b29ee8ba which is
commit 710505212e3272396394f8cf78e3ddfd05df3f22 upstream.

It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.

Bug: 161946584
Change-Id: I6727c91fc52be0c25b57d9b7f0ba14118b109b8d
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman
2025-07-29 07:13:09 +00:00
parent 0a94163e88
commit f8cf584f0e
1 changed files with 4 additions and 10 deletions
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14
drivers/spi/spi.c
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@@ -4010,13 +4010,10 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
xfer->tx_nbits != SPI_NBITS_QUAD)
return -EINVAL;
if ((xfer->tx_nbits == SPI_NBITS_DUAL) &&
!(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL)))
!(spi->mode & (SPI_TX_DUAL | SPI_TX_QUAD)))
return -EINVAL;
if ((xfer->tx_nbits == SPI_NBITS_QUAD) &&
!(spi->mode & (SPI_TX_QUAD | SPI_TX_OCTAL)))
return -EINVAL;
if ((xfer->tx_nbits == SPI_NBITS_OCTAL) &&
!(spi->mode & SPI_TX_OCTAL))
!(spi->mode & SPI_TX_QUAD))
return -EINVAL;
}
/* Check transfer rx_nbits */
@@ -4028,13 +4025,10 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message)
xfer->rx_nbits != SPI_NBITS_QUAD)
return -EINVAL;
if ((xfer->rx_nbits == SPI_NBITS_DUAL) &&
!(spi->mode & (SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL)))
!(spi->mode & (SPI_RX_DUAL | SPI_RX_QUAD)))
return -EINVAL;
if ((xfer->rx_nbits == SPI_NBITS_QUAD) &&
!(spi->mode & (SPI_RX_QUAD | SPI_RX_OCTAL)))
return -EINVAL;
if ((xfer->rx_nbits == SPI_NBITS_OCTAL) &&
!(spi->mode & SPI_RX_OCTAL))
!(spi->mode & SPI_RX_QUAD))
return -EINVAL;
}