linux-kernel - [PATCH 4.4 03/86] powerpc/powernv/opal-dump : Use IRQ_HANDLED instead of numbers in interrupt handler

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Date:   Mon,  9 Nov 2020 13:54:10 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mukesh Ojha <mukesh02@...ux.vnet.ibm.com>,
        Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.4 03/86] powerpc/powernv/opal-dump : Use IRQ_HANDLED instead of numbers in interrupt handler

From: Mukesh Ojha <mukesh02@...ux.vnet.ibm.com>

commit b29336c0e1785a28bc40a9fd47c2321671e9792e upstream.

Fixes: 8034f715f ("powernv/opal-dump: Convert to irq domain")

Converts all the return explicit number to a more proper IRQ_HANDLED,
which looks proper incase of interrupt handler returning case.

Here, It also removes error message like "nobody cared" which was
getting unveiled while returning -1 or 0 from handler.

Signed-off-by: Mukesh Ojha <mukesh02@...ux.vnet.ibm.com>
Reviewed-by: Vasant Hegde <hegdevasant@...ux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Cc: Kamal Mostafa <kamal@...onical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/powerpc/platforms/powernv/opal-dump.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/arch/powerpc/platforms/powernv/opal-dump.c
+++ b/arch/powerpc/platforms/powernv/opal-dump.c
@@ -385,13 +385,12 @@ static irqreturn_t process_dump(int irq,
 {
 	int rc;
 	uint32_t dump_id, dump_size, dump_type;
-	struct dump_obj *dump;
 	char name[22];
 	struct kobject *kobj;
 
 	rc = dump_read_info(&dump_id, &dump_size, &dump_type);
 	if (rc != OPAL_SUCCESS)
-		return rc;
+		return IRQ_HANDLED;
 
 	sprintf(name, "0x%x-0x%x", dump_type, dump_id);
 
@@ -403,12 +402,10 @@ static irqreturn_t process_dump(int irq,
 	if (kobj) {
 		/* Drop reference added by kset_find_obj() */
 		kobject_put(kobj);
-		return 0;
+		return IRQ_HANDLED;
 	}
 
-	dump = create_dump_obj(dump_id, dump_size, dump_type);
-	if (!dump)
-		return -1;
+	create_dump_obj(dump_id, dump_size, dump_type);
 
 	return IRQ_HANDLED;
 }