| Message ID | 20230519160433.287161-3-martin@kaiser.cx (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2,1/3] hwrng: imx-rngc - simpler check for available random bytes | expand |
diff --git a/drivers/char/hw_random/imx-rngc.c b/drivers/char/hw_random/imx-rngc.c index cf29c323453a..b5f7b91bd13e 100644 --- a/drivers/char/hw_random/imx-rngc.c +++ b/drivers/char/hw_random/imx-rngc.c @@ -27,7 +27,7 @@ #define RNGC_FIFO 0x0014 /* the fields in the ver id register */ -#define RNGC_TYPE_SHIFT 28 +#define RNG_TYPE GENMASK(31, 28) #define RNGC_VER_MAJ_SHIFT 8 /* the rng_type field */ @@ -251,7 +251,7 @@ static int imx_rngc_probe(struct platform_device *pdev) return irq; ver_id = readl(rngc->base + RNGC_VER_ID); - rng_type = ver_id >> RNGC_TYPE_SHIFT; + rng_type = FIELD_GET(RNG_TYPE, ver_id); /* * This driver supports only RNGC and RNGB. (There's a different * driver for RNGA.)
Use the mechanism from bitfield.h to read the rng type field in the version_id register. This makes the code a tiny bit simpler. Signed-off-by: Martin Kaiser <martin@kaiser.cx> --- drivers/char/hw_random/imx-rngc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)