[RFC PATCH 03/17] crypto: caam: Blacklist CAAM when kexec is enabled

Scott Wood scottwood at freescale.com
Sun Jul 19 06:08:40 AEST 2015

This driver hangs the kernel on boot when loaded via kexec.

To make this driver kexec-safe, add a suspend or freeze hook, and when
probing, don't make any assumptions about the existing hardware state
(e.g. don't request_irq before quiescing the device).

Signed-off-by: Scott Wood <scottwood at freescale.com>
Cc: Cristian Stoica <cristian.stoica at freescale.com>
Cc: Horia Geanta <horia.geanta at freescale.com>
Cc: Herbert Xu <herbert at gondor.apana.org.au>
Cc: linux-crypto at vger.kernel.org
 drivers/crypto/caam/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/caam/Kconfig b/drivers/crypto/caam/Kconfig
index e286e28..310e9e0 100644
--- a/drivers/crypto/caam/Kconfig
+++ b/drivers/crypto/caam/Kconfig
@@ -1,6 +1,6 @@
 	tristate "Freescale CAAM-Multicore driver backend"
-	depends on FSL_SOC
+	depends on FSL_SOC && !KEXEC
 	  Enables the driver module for Freescale's Cryptographic Accelerator
 	  and Assurance Module (CAAM), also known as the SEC version 4 (SEC4).

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