linux-kernel - [PATCH v2] firmware: xlnx-zynqmp: fix compilation warning

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Date:   Tue, 24 Nov 2020 00:18:18 -0800
From:   Wendy Liang <wendy.liang@...inx.com>
To:     <michal.simek@...inx.com>, <rajan.vaja@...inx.com>,
        <gregkh@...uxfoundation.org>, <tejas.patel@...inx.com>,
        <manish.narani@...inx.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Wendy Liang <wendy.liang@...inx.com>
Subject: [PATCH v2] firmware: xlnx-zynqmp: fix compilation warning

Fix compilation warning when ZYNQMP_FIRMWARE is not defined.

include/linux/firmware/xlnx-zynqmp.h: In function
'zynqmp_pm_get_eemi_ops':
 include/linux/firmware/xlnx-zynqmp.h:363:9: error: implicit
 declaration of function 'ERR_PTR'
 [-Werror=implicit-function-declaration]
     363 |  return ERR_PTR(-ENODEV);

include/linux/firmware/xlnx-zynqmp.h:363:18: note: each undeclared
identifier is reported only once for each function it appears in
   include/linux/firmware/xlnx-zynqmp.h: In function
'zynqmp_pm_get_api_version':
   include/linux/firmware/xlnx-zynqmp.h:367:10: error: 'ENODEV'
undeclared (first use in this function)
     367 |  return -ENODEV;
         |          ^~~~~~

Signed-off-by: Wendy Liang <wendy.liang@...inx.com>
---
v2:
* Always include linux/err.h
---
 include/linux/firmware/xlnx-zynqmp.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h
index 5968df8..f84244e 100644
--- a/include/linux/firmware/xlnx-zynqmp.h
+++ b/include/linux/firmware/xlnx-zynqmp.h
@@ -13,6 +13,8 @@
 #ifndef __FIRMWARE_ZYNQMP_H__
 #define __FIRMWARE_ZYNQMP_H__
 
+#include <linux/err.h>
+
 #define ZYNQMP_PM_VERSION_MAJOR	1
 #define ZYNQMP_PM_VERSION_MINOR	0
 
-- 
2.7.4