[PATCH] spi: amlogic: fix spifc build error

[PATCH] spi: amlogic: fix spifc build error

[Xianwei Zhao via B4 Relay]

From: Xianwei Zhao <xianwei.zhao@amlogic.com>

There is an error building when
Compiler version: gcc (GCC) 14.3.0
Assembler version: GNU assembler (GNU Binutils) 2.44
"
 Error log:
 WARNING: modpost: missing MODULE_DESCRIPTION() in arch/arm/probes/kprobes/test-kprobes.o
 ERROR: modpost: "__ffsdi2" [drivers/spi/spi-amlogic-spifc-a4.ko] undefined!
"

Use __ffs API instead of __bf_shf to be safer.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/all/f594c621-f9e1-49f2-af31-23fbcb176058@roeck-us.net/
Fixes: 4670db6f32e9 ("spi: amlogic: add driver for Amlogic SPI Flash Controller")
Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
---
Fix build err for spifc.
---
 drivers/spi/spi-amlogic-spifc-a4.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spi-amlogic-spifc-a4.c b/drivers/spi/spi-amlogic-spifc-a4.c
index 4338d00e56a6..35a7c4965e11 100644
--- a/drivers/spi/spi-amlogic-spifc-a4.c
+++ b/drivers/spi/spi-amlogic-spifc-a4.c
@@ -286,7 +286,7 @@ static int aml_sfc_set_bus_width(struct aml_sfc *sfc, u8 buswidth, u32 mask)
 
 	for (i = 0; i <= LANE_MAX; i++) {
 		if (buswidth == 1 << i) {
-			conf = i << __bf_shf(mask);
+			conf = i << __ffs(mask);
 			return regmap_update_bits(sfc->regmap_base, SFC_SPI_CFG,
 						  mask, conf);
 		}
@@ -566,7 +566,7 @@ static int aml_sfc_raw_io_op(struct aml_sfc *sfc, const struct spi_mem_op *op)
 	if (!op->data.nbytes)
 		goto end_xfer;
 
-	conf = (op->data.nbytes >> RAW_SIZE_BW) << __bf_shf(RAW_EXT_SIZE);
+	conf = (op->data.nbytes >> RAW_SIZE_BW) << __ffs(RAW_EXT_SIZE);
 	ret = regmap_update_bits(sfc->regmap_base, SFC_SPI_CFG, RAW_EXT_SIZE, conf);
 	if (ret)
 		goto err_out;

---
base-commit: 4412ab501677606436e5c49e41151a1e6eac7ac0
change-id: 20251015-fix-spifc-a4-0836ee1d0066

Best regards,
-- 
Xianwei Zhao <xianwei.zhao@amlogic.com>

Re: [PATCH] spi: amlogic: fix spifc build error

[Mark Brown]

On Wed, 15 Oct 2025 15:36:59 +0800, Xianwei Zhao wrote:
> There is an error building when
> Compiler version: gcc (GCC) 14.3.0
> Assembler version: GNU assembler (GNU Binutils) 2.44
> "
>  Error log:
>  WARNING: modpost: missing MODULE_DESCRIPTION() in arch/arm/probes/kprobes/test-kprobes.o
>  ERROR: modpost: "__ffsdi2" [drivers/spi/spi-amlogic-spifc-a4.ko] undefined!
> "
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: amlogic: fix spifc build error
      commit: 6b6e03106163458716c47df2baa9ad08ed4ddb0e

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark