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spi: spi-mem: Allow controller supporting mem_ops without exec_op

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Currently exec_op is always required if controller driver provides
mem_ops. But some controller such as bcm63xx-hsspi may only need to
implement other operation like supports_op and use the default
execution operation. This patch removes this restriction.

Signed-off-by: William Zhang <william.zhang@broadcom.com>
Link: https://lore.kernel.org/r/20230209200246.141520-13-william.zhang@broadcom.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
William Zhang 2023-02-09 12:02:43 -08:00 committed by Mark Brown
parent b7a82103f7
commit 76a85704cb
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 7 additions and 8 deletions
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2
drivers/spi/spi-mem.c
View File

@ -325,7 +325,7 @@ int spi_mem_exec_op(struct spi_mem *mem, const struct spi_mem_op *op)
if (!spi_mem_internal_supports_op(mem, op))
return -ENOTSUPP;
if (ctlr->mem_ops && !mem->spi->cs_gpiod) {
if (ctlr->mem_ops && ctlr->mem_ops->exec_op && !mem->spi->cs_gpiod) {
ret = spi_mem_access_start(mem);
if (ret)
return ret;

13
drivers/spi/spi.c
View File

@ -3072,15 +3072,14 @@ static int spi_controller_check_ops(struct spi_controller *ctlr)
* The controller may implement only the high-level SPI-memory like
* operations if it does not support regular SPI transfers, and this is
* valid use case.
* If ->mem_ops is NULL, we request that at least one of the
* ->transfer_xxx() method be implemented.
* If ->mem_ops or ->mem_ops->exec_op is NULL, we request that at least
* one of the ->transfer_xxx() method be implemented.
*/
if (ctlr->mem_ops) {
if (!ctlr->mem_ops->exec_op)
return -EINVAL;
} else if (!ctlr->transfer && !ctlr->transfer_one &&
if (!ctlr->mem_ops || (ctlr->mem_ops && !ctlr->mem_ops->exec_op)) {
if (!ctlr->transfer && !ctlr->transfer_one &&
!ctlr->transfer_one_message) {
return -EINVAL;
return -EINVAL;
}
}
return 0;