diff options
| -rw-r--r-- | drivers/firmware/tegra/bpmp-debugfs.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c index 636b40d4364d..5a6a01b16872 100644 --- a/drivers/firmware/tegra/bpmp-debugfs.c +++ b/drivers/firmware/tegra/bpmp-debugfs.c @@ -127,6 +127,8 @@ static int mrq_debugfs_read(struct tegra_bpmp *bpmp, err = tegra_bpmp_transfer(bpmp, &msg); if (err < 0) return err; + else if (msg.rx.ret < 0) + return -EINVAL; *nbytes = (size_t)resp.fop.nbytes; @@ -184,6 +186,8 @@ static int mrq_debugfs_dumpdir(struct tegra_bpmp *bpmp, dma_addr_t addr, err = tegra_bpmp_transfer(bpmp, &msg); if (err < 0) return err; + else if (msg.rx.ret < 0) + return -EINVAL; *nbytes = (size_t)resp.dumpdir.nbytes; @@ -374,7 +378,7 @@ int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp) { dma_addr_t phys; void *virt; - const size_t sz = SZ_256K; + const size_t sz = SZ_512K; size_t nbytes; int ret; struct dentry *root; @@ -394,8 +398,12 @@ int tegra_bpmp_init_debugfs(struct tegra_bpmp *bpmp) } ret = mrq_debugfs_dumpdir(bpmp, phys, sz, &nbytes); - if (ret < 0) + if (ret < 0) { + goto free; + } else if (nbytes > sz) { + ret = -EINVAL; goto free; + } ret = create_debugfs_mirror(bpmp, virt, nbytes, root); free: |