linux-kernel - [PATCH] staging: media/atomisp: don't compile unused code

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Message-ID: <YDEZu3oniT/vUMMY@karthik-strix-linux.karthek.com>
Date:   Sat, 20 Feb 2021 19:46:27 +0530
From:   karthik alapati <mail@...thek.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc:     linux-media@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: media/atomisp: don't compile unused code

currently the functions defined in ibuf_ctrl_rmgr.c file are only
used by isys_init.c when CONFIG_VIDEO_ATOMISP_ISP2401 is selected
so dont't compile it when not needed, also fixes some sparse warnings

Signed-off-by: karthik alapati <mail@...thek.com>
---
is this the right patch or just compiling out those functions
by conditional comiplation is sufficient?

 drivers/staging/media/atomisp/Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/media/atomisp/Makefile b/drivers/staging/media/atomisp/Makefile
index 1dfad0dd0..51498b2e8 100644
--- a/drivers/staging/media/atomisp/Makefile
+++ b/drivers/staging/media/atomisp/Makefile
@@ -126,7 +126,6 @@ atomisp-objs += \
 	pci/runtime/inputfifo/src/inputfifo.o \
 	pci/runtime/isp_param/src/isp_param.o \
 	pci/runtime/isys/src/csi_rx_rmgr.o \
-	pci/runtime/isys/src/ibuf_ctrl_rmgr.o \
 	pci/runtime/isys/src/isys_dma_rmgr.o \
 	pci/runtime/isys/src/isys_init.o \
 	pci/runtime/isys/src/isys_stream2mmio_rmgr.o \
@@ -323,7 +322,9 @@ DEFINES := -DHRT_HW -DHRT_ISP_CSS_CUSTOM_HOST -DHRT_USE_VIR_ADDRS -D__HOST__
 #DEFINES += -DUSE_KMEM_CACHE
 
 ifeq ($(CONFIG_VIDEO_ATOMISP_ISP2401),y)
-atomisp-objs += $(obj-cht)
+atomisp-objs += \
+	$(obj-cht) \
+	pci/runtime/isys/src/ibuf_ctrl_rmgr.o
 DEFINES += -DISP2401 -DISP2401_NEW_INPUT_SYSTEM -DSYSTEM_hive_isp_css_2401_system
 else
 atomisp-objs += $(obj-byt)
-- 
2.30.1