[PATCH 5.11 105/210] remoteproc: qcom: pil_info: avoid 64-bit division

Greg Kroah-Hartman
2021-04-12T09:31:11Z

From: Arnd Bergmann <arnd@arndb.de>

[ Upstream commit 7029e783027706b427bbfbdf8558252c1dac6fa0 ]

On 32-bit machines with 64-bit resource_size_t, the driver causes
a link failure because of the 64-bit division:

arm-linux-gnueabi-ld: drivers/remoteproc/qcom_pil_info.o: in function `qcom_pil_info_store':
qcom_pil_info.c:(.text+0x1ec): undefined reference to `__aeabi_uldivmod'

Add a cast to an u32 to avoid this. If the resource exceeds 4GB,
there are bigger problems.

Fixes: 549b67da660d ("remoteproc: qcom: Introduce helper to store pil info in IMEM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210103135628.3702427-1-arnd@kernel.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/remoteproc/qcom_pil_info.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/remoteproc/qcom_pil_info.c b/drivers/remoteproc/qcom_pil_info.c
index 5521c4437ffa..7c007dd7b200 100644
--- a/drivers/remoteproc/qcom_pil_info.c
+++ b/drivers/remoteproc/qcom_pil_info.c
@@ -56,7 +56,7 @@ static int qcom_pil_info_init(void)
memset_io(base, 0, resource_size(&imem));

_reloc.base = base;
- _reloc.num_entries = resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;
+ _reloc.num_entries = (u32)resource_size(&imem) / PIL_RELOC_ENTRY_SIZE;

return 0;
}
--
2.30.2