linux-kernel - [PATCH v2 02/13] staging: hikey9xx: hisi-spmi-controller: clean sparse warnings

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Message-Id: <0a1b05424637b47e5c93c047e436f2ab2b88c5a5.1610975633.git.mchehab+huawei@kernel.org>
Date:   Mon, 18 Jan 2021 14:28:03 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Colin Ian King <colin.king@...onical.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Mayulong <mayulong1@...wei.com>,
        YueHaibing <yuehaibing@...wei.com>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 02/13] staging: hikey9xx: hisi-spmi-controller: clean sparse warnings

Sparse complains about __be32 conversions:

    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:164:24:      warning: cast to restricted __be32
    drivers/spmi/hisi-spmi-controller.c drivers/spmi/hisi-spmi-controller.c:239:17:      warning: cast from restricted __be32

The conversions there are valid ones. So, add __force macro
to disable such warnings.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 drivers/staging/hikey9xx/hisi-spmi-controller.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/hikey9xx/hisi-spmi-controller.c b/drivers/staging/hikey9xx/hisi-spmi-controller.c
index f831c43f4783..4be2344ad7b5 100644
--- a/drivers/staging/hikey9xx/hisi-spmi-controller.c
+++ b/drivers/staging/hikey9xx/hisi-spmi-controller.c
@@ -161,7 +161,7 @@ static int spmi_read_cmd(struct spmi_controller *ctrl,
 			     SPMI_SLAVE_OFFSET * slave_id +
 			     SPMI_APB_SPMI_RDATA0_BASE_ADDR +
 			     i * SPMI_PER_DATAREG_BYTE);
-		data = be32_to_cpu((__be32)data);
+		data = be32_to_cpu((__force __be32)data);
 		if ((bc - i * SPMI_PER_DATAREG_BYTE) >> 2) {
 			memcpy(buf, &data, sizeof(data));
 			buf += sizeof(data);
@@ -236,7 +236,7 @@ static int spmi_write_cmd(struct spmi_controller *ctrl,
 			buf += (bc % SPMI_PER_DATAREG_BYTE);
 		}
 
-		writel((u32)cpu_to_be32(data),
+		writel((__force u32)cpu_to_be32(data),
 		       spmi_controller->base + chnl_ofst +
 		       SPMI_APB_SPMI_WDATA0_BASE_ADDR +
 		       SPMI_PER_DATAREG_BYTE * i);
-- 
2.29.2