From: Maxime Méré <maxime.mere@foss.st.com>
Date: Tue, 28 May 2024 14:05:48 +0000 (+0200)
Subject: crypto: stm32/cryp - call finalize with bh disabled
X-Git-Tag: v6.11-rc1~119^2~59
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=56ddb9aa3b324c2d9645b5a7343e46010cf3f6ce;p=thirdparty%2Fkernel%2Flinux.git

crypto: stm32/cryp - call finalize with bh disabled

The finalize operation in interrupt mode produce a produces a spinlock
recursion warning. The reason is the fact that BH must be disabled
during this process.

Signed-off-by: Maxime Méré <maxime.mere@foss.st.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c
index 445276b848ed0..937f6dab8955e 100644
--- a/drivers/crypto/stm32/stm32-cryp.c
+++ b/drivers/crypto/stm32/stm32-cryp.c
@@ -11,6 +11,7 @@
 #include <crypto/internal/des.h>
 #include <crypto/internal/skcipher.h>
 #include <crypto/scatterwalk.h>
+#include <linux/bottom_half.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/dma-mapping.h>
@@ -2203,8 +2204,11 @@ static irqreturn_t stm32_cryp_irq_thread(int irq, void *arg)
 		it_mask &= ~IMSCR_OUT;
 	stm32_cryp_write(cryp, cryp->caps->imsc, it_mask);
 
-	if (!cryp->payload_in && !cryp->header_in && !cryp->payload_out)
+	if (!cryp->payload_in && !cryp->header_in && !cryp->payload_out) {
+		local_bh_disable();
 		stm32_cryp_finish_req(cryp, 0);
+		local_bh_enable();
+	}
 
 	return IRQ_HANDLED;
 }