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authorCaleb Sander Mateos <csander@purestorage.com>2025-06-21 19:28:41 +0300
committerJens Axboe <axboe@kernel.dk>2025-06-25 05:45:31 +0300
commit67caa528ae08cd05e485c0ea6aea0baaf6579b06 (patch)
treeac1c645dbb3b2baf1257c4a55155cf4e167f0722 /include
parent5223372e672eaa576c892984b438875426d8ff2b (diff)
downloadlinux-67caa528ae08cd05e485c0ea6aea0baaf6579b06.tar.xz
ublk: fix narrowing warnings in UAPI header
When a C++ file compiled with -Wc++11-narrowing includes the UAPI header linux/ublk_cmd.h, ublk_sqe_addr_to_auto_buf_reg()'s assignments of u64 values to u8, u16, and u32 fields result in compiler warnings. Add explicit casts to the intended types to avoid these warnings. Drop the unnecessary bitmasks. Reported-by: Uday Shankar <ushankar@purestorage.com> Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Fixes: 99c1e4eb6a3f ("ublk: register buffer to local io_uring with provided buf index via UBLK_F_AUTO_BUF_REG") Reviewed-by: Ming Lei <ming.lei@redhat.com> Link: https://lore.kernel.org/r/20250621162842.337452-1-csander@purestorage.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include')
-rw-r--r--include/uapi/linux/ublk_cmd.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/uapi/linux/ublk_cmd.h b/include/uapi/linux/ublk_cmd.h
index 77d9d6af46da..c062109cb686 100644
--- a/include/uapi/linux/ublk_cmd.h
+++ b/include/uapi/linux/ublk_cmd.h
@@ -450,10 +450,10 @@ static inline struct ublk_auto_buf_reg ublk_sqe_addr_to_auto_buf_reg(
__u64 sqe_addr)
{
struct ublk_auto_buf_reg reg = {
- .index = sqe_addr & 0xffff,
- .flags = (sqe_addr >> 16) & 0xff,
- .reserved0 = (sqe_addr >> 24) & 0xff,
- .reserved1 = sqe_addr >> 32,
+ .index = (__u16)sqe_addr,
+ .flags = (__u8)(sqe_addr >> 16),
+ .reserved0 = (__u8)(sqe_addr >> 24),
+ .reserved1 = (__u32)(sqe_addr >> 32),
};
return reg;