diff options
| author | Dave Airlie <airlied@redhat.com> | 2014-12-02 10:58:33 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-12-02 10:58:33 +1000 |
| commit | e8115e79aa62b6ebdb3e8e61ca4092cc32938afc (patch) | |
| tree | 42b791ab54ef9d5c73dcd49f907b8b37fa2f7e19 /drivers/char/hw_random/pseries-rng.c | |
| parent | 9be23ae4350bfd71c0cc2ea3494671ee90e5603b (diff) | |
| parent | 009d0431c3914de64666bec0d350e54fdd59df6a (diff) | |
Merge tag 'v3.18-rc7' into drm-next
This fixes a bunch of conflicts prior to merging i915 tree.
Linux 3.18-rc7
Conflicts:
drivers/gpu/drm/exynos/exynos_drm_drv.c
drivers/gpu/drm/i915/i915_drv.c
drivers/gpu/drm/i915/intel_pm.c
drivers/gpu/drm/tegra/dc.c
Diffstat (limited to 'drivers/char/hw_random/pseries-rng.c')
| -rw-r--r-- | drivers/char/hw_random/pseries-rng.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/char/hw_random/pseries-rng.c b/drivers/char/hw_random/pseries-rng.c index 6226aa08c36a..bcf86f91800a 100644 --- a/drivers/char/hw_random/pseries-rng.c +++ b/drivers/char/hw_random/pseries-rng.c @@ -25,18 +25,21 @@ #include <asm/vio.h> -static int pseries_rng_data_read(struct hwrng *rng, u32 *data) +static int pseries_rng_read(struct hwrng *rng, void *data, size_t max, bool wait) { + u64 buffer[PLPAR_HCALL_BUFSIZE]; + size_t size = max < 8 ? max : 8; int rc; - rc = plpar_hcall(H_RANDOM, (unsigned long *)data); + rc = plpar_hcall(H_RANDOM, (unsigned long *)buffer); if (rc != H_SUCCESS) { pr_err_ratelimited("H_RANDOM call failed %d\n", rc); return -EIO; } + memcpy(data, buffer, size); /* The hypervisor interface returns 64 bits */ - return 8; + return size; } /** @@ -55,7 +58,7 @@ static unsigned long pseries_rng_get_desired_dma(struct vio_dev *vdev) static struct hwrng pseries_rng = { .name = KBUILD_MODNAME, - .data_read = pseries_rng_data_read, + .read = pseries_rng_read, }; static int __init pseries_rng_probe(struct vio_dev *dev, |