mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-09-30 22:26:55 +00:00
Code Issues Releases Wiki Activity

spi: Merge AMD fix

Browse source 
Work around problems with large transfers.
This commit is contained in:
Mark Brown 2022-07-06 20:37:43 +01:00
commit 5b1a01c162
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 8 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/spi/spi-amd.c
View file

@ -33,6 +33,7 @@
#define AMD_SPI_RX_COUNT_REG 0x4B
#define AMD_SPI_STATUS_REG 0x4C
#define AMD_SPI_FIFO_SIZE 70
#define AMD_SPI_MEM_SIZE 200
/* M_CMD OP codes for SPI */
@ -270,6 +271,11 @@ static int amd_spi_master_transfer(struct spi_master *master,
return 0;
}
static size_t amd_spi_max_transfer_size(struct spi_device *spi)
{
return AMD_SPI_FIFO_SIZE;
}
static int amd_spi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -302,6 +308,8 @@ static int amd_spi_probe(struct platform_device *pdev)
master->flags = SPI_MASTER_HALF_DUPLEX;
master->setup = amd_spi_master_setup;
master->transfer_one_message = amd_spi_master_transfer;
master->max_transfer_size = amd_spi_max_transfer_size;
master->max_message_size = amd_spi_max_transfer_size;
/* Register the controller with SPI framework */
err = devm_spi_register_master(dev, master);