UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

tpm_tis_spi: Pass the SPI IRQ down to the driver 

An SPI TPM device managed directly on an embedded board using
the SPI bus and some GPIO or similar line as IRQ handler will
pass the IRQn from the TPM device associated with the SPI
device. This is already handled by the SPI core, so make sure
to pass this down to the core as well.

(The TPM core habit of using -1 to signal no IRQ is dubious
(as IRQ 0 is NO_IRQ) but I do not want to mess with that
semantic in this patch.)

Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This commit is contained in:
Linus Walleij 2018-06-08 09:09:07 +02:00 committed by Jarkko Sakkinen
parent ce63c05b66
commit 1a339b658d
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/char/tpm/tpm_tis_spi.c
View File

@ -199,6 +199,7 @@ static const struct tpm_tis_phy_ops tpm_spi_phy_ops = {
static int tpm_tis_spi_probe(struct spi_device *dev)
{
struct tpm_tis_spi_phy *phy;
int irq;
phy = devm_kzalloc(&dev->dev, sizeof(struct tpm_tis_spi_phy),
GFP_KERNEL);
@ -211,7 +212,13 @@ static int tpm_tis_spi_probe(struct spi_device *dev)
if (!phy->iobuf)
return -ENOMEM;
return tpm_tis_core_init(&dev->dev, &phy->priv, -1, &tpm_spi_phy_ops,
/* If the SPI device has an IRQ then use that */
if (dev->irq > 0)
irq = dev->irq;
else
irq = -1;
return tpm_tis_core_init(&dev->dev, &phy->priv, irq, &tpm_spi_phy_ops,
NULL);
}