This patch fixes the following warnings reported by sparse, by adding
missing __force annotations.
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:164:24: warning: cast to restricted __be32
drivers/staging/hikey9xx/hisi-spmi-controller.c:239:25: warning: cast from restricted __be32
Rationale for #164:
data is declared as u32, and it is read and then converted by means of
be32_to_cpu(). Said function expects a __be32 but data is u32, therefore
there's a type missmatch here.
Rationale for #239:
Is the dual of #164. This time data going to be written so it
needs to be converted from cpu to __be32, but writel() expects u32 and the
output of cpu_to_be32 returns a __be32.
Signed-off-by: Juan Antonio Aldea-Armenteros <juant.aldea@xxxxxxxxx>
---
Changes in V2:
- Fix typo in commit message.
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..861aedd5de48 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((__be32 __force)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((u32 __force)cpu_to_be32(data),
spmi_controller->base + chnl_ofst +
SPMI_APB_SPMI_WDATA0_BASE_ADDR +
SPMI_PER_DATAREG_BYTE * i);
--
2.28.0
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