diff options
| author | Martin Kaiser <martin@kaiser.cx> | 2023-05-19 18:04:32 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-05-24 18:12:33 +0800 |
| commit | cbd077813505765273f639aef13a10d81107e1aa (patch) | |
| tree | 8dafc3efdab976e8c45fd22c029e08827b073e3e /drivers/char/hw_random | |
| parent | 97ecafc4f6566f538bbde09d3a8baae4a3419eef (diff) | |
hwrng: imx-rngc - use bitfield macros to read rng type
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>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char/hw_random')
| -rw-r--r-- | drivers/char/hw_random/imx-rngc.c | 4 |
1 files changed, 2 insertions, 2 deletions
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.) |