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* [PATCH v2] tpm: Switch to platform_get_irq_optional()
@ 2019-10-25  9:14 Hans de Goede
  2019-10-25 14:12 ` Jerry Snitselaar
  2019-10-28 20:47 ` Jarkko Sakkinen
  0 siblings, 2 replies; 3+ messages in thread
From: Hans de Goede @ 2019-10-25  9:14 UTC (permalink / raw)
  To: Peter Huewe, Jarkko Sakkinen, Jason Gunthorpe
  Cc: Hans de Goede, Arnd Bergmann, Greg Kroah-Hartman,
	linux-integrity, stable

platform_get_irq() calls dev_err() on an error. As the IRQ usage in the
tpm_tis driver is optional, this is undesirable.

Specifically this leads to this new false-positive error being logged:
[    5.135413] tpm_tis MSFT0101:00: IRQ index 0 not found

This commit switches to platform_get_irq_optional(), which does not log
an error, fixing this.

Fixes: 7723f4c5ecdb ("driver core: platform: Add an error message to platform_get_irq*()"
Cc: <stable@vger.kernel.org> # 5.4.x
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
Changes in v2:
- Slightly reword commit msg, add Fixes tag
---
 drivers/char/tpm/tpm_tis.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/tpm/tpm_tis.c b/drivers/char/tpm/tpm_tis.c
index e4fdde93ed4c..e7df342a317d 100644
--- a/drivers/char/tpm/tpm_tis.c
+++ b/drivers/char/tpm/tpm_tis.c
@@ -286,7 +286,7 @@ static int tpm_tis_plat_probe(struct platform_device *pdev)
 	}
 	tpm_info.res = *res;
 
-	tpm_info.irq = platform_get_irq(pdev, 0);
+	tpm_info.irq = platform_get_irq_optional(pdev, 0);
 	if (tpm_info.irq <= 0) {
 		if (pdev != force_pdev)
 			tpm_info.irq = -1;
-- 
2.23.0


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2019-10-25  9:14 [PATCH v2] tpm: Switch to platform_get_irq_optional() Hans de Goede
2019-10-25 14:12 ` Jerry Snitselaar
2019-10-28 20:47 ` Jarkko Sakkinen

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