diff options
| author | LorDClockaN <davor@losinj.com> | 2019-03-27 18:32:24 +0100 |
|---|---|---|
| committer | LorDClockaN <davor@losinj.com> | 2019-03-27 18:32:24 +0100 |
| commit | a8e12a51a8c22de9f1281b06f3cd85de5d0ab564 (patch) | |
| tree | 45230cd53d8092c346bd00810e3046fcea43666a /drivers/hwtracing/stm/core.c | |
| parent | 92857b007d911bfff7e65465694d28bf8fe96fc7 (diff) | |
| parent | b96e2451dc7dc8df5b5b330af0e96a8ae0e5a421 (diff) | |
Merge branch 'p9x' of https://github.com/DirtyUnicorns/android_kernel_google_bluecross.git into HEADHEADp9.0
Diffstat (limited to 'drivers/hwtracing/stm/core.c')
| -rw-r--r-- | drivers/hwtracing/stm/core.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c index d89101d8c99d..31659474929a 100644 --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -252,6 +252,9 @@ static int find_free_channels(unsigned long *bitmap, unsigned int start, ; if (i == width) return pos; + + /* step over [pos..pos+i) to continue search */ + pos += i; } return -1; @@ -564,7 +567,7 @@ static int stm_char_policy_set_ioctl(struct stm_file *stmf, void __user *arg) { struct stm_device *stm = stmf->stm; struct stp_policy_id *id; - int ret = -EINVAL; + int ret = -EINVAL, wlimit = 1; u32 size; if (stmf->output.nr_chans) @@ -592,8 +595,10 @@ static int stm_char_policy_set_ioctl(struct stm_file *stmf, void __user *arg) if (id->__reserved_0 || id->__reserved_1) goto err_free; - if (id->width < 1 || - id->width > PAGE_SIZE / stm->data->sw_mmiosz) + if (stm->data->sw_mmiosz) + wlimit = PAGE_SIZE / stm->data->sw_mmiosz; + + if (id->width < 1 || id->width > wlimit) goto err_free; ret = stm_file_assign(stmf, id->id, id->width); |