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spi: intel: Check number of chip selects after reading the descriptor 

The flash decriptor contains the number of flash components that we use
to figure out how many flash chips there are connected. Therefore we
need to read it first before deciding how many chip selects the
controller has.

Reported-by: Marcin Witkowski <marcin.witkowski@intel.com>
Fixes: 3f03c618be ("spi: intel: Add support for second flash chip")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20230215110040.42186-1-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Mika Westerberg 2023-02-15 13:00:40 +02:00 committed by Mark Brown
parent 35bba23e67
commit 574fbb95cd
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 4 deletions
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8
drivers/spi/spi-intel.c
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@ -1368,14 +1368,14 @@ static int intel_spi_populate_chip(struct intel_spi *ispi)
if (!spi_new_device(ispi->master, &chip))
return -ENODEV;
/* Add the second chip if present */
if (ispi->master->num_chipselect < 2)
return 0;
ret = intel_spi_read_desc(ispi);
if (ret)
return ret;
/* Add the second chip if present */
if (ispi->master->num_chipselect < 2)
return 0;
chip.platform_data = NULL;
chip.chip_select = 1;