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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-08 20:26:33 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-01-08 20:26:33 +0300 |
| commit | b07f636fca1c8fbba124b0082487c0b3890a0e0c (patch) | |
| tree | 70711c264122f4a563d9b27360f5fa5411dd28c2 | |
| parent | ae6088216ce4b99b3a4aaaccd2eb2dd40d473d42 (diff) | |
| parent | a430e67d9a2c62a8c7b315b99e74de02018d0a96 (diff) | |
| download | linux-b07f636fca1c8fbba124b0082487c0b3890a0e0c.tar.xz | |
Merge tag 'tpmdd-next-20200108' of git://git.infradead.org/users/jjs/linux-tpmdd
Pull more tpmd fixes from Jarkko Sakkinen:
"One critical regression fix (the faulty commit got merged in rc3, but
also marked for stable)"
* tag 'tpmdd-next-20200108' of git://git.infradead.org/users/jjs/linux-tpmdd:
tpm: Handle negative priv->response_len in tpm_common_read()
| -rw-r--r-- | drivers/char/tpm/tpm-dev-common.c | 2 | ||||
| -rw-r--r-- | drivers/char/tpm/tpm-dev.h | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/tpm/tpm-dev-common.c b/drivers/char/tpm/tpm-dev-common.c index b23b0b999232..87f449340202 100644 --- a/drivers/char/tpm/tpm-dev-common.c +++ b/drivers/char/tpm/tpm-dev-common.c @@ -130,7 +130,7 @@ ssize_t tpm_common_read(struct file *file, char __user *buf, priv->response_read = true; ret_size = min_t(ssize_t, size, priv->response_length); - if (!ret_size) { + if (ret_size <= 0) { priv->response_length = 0; goto out; } diff --git a/drivers/char/tpm/tpm-dev.h b/drivers/char/tpm/tpm-dev.h index 1089fc0bb290..f3742bcc73e3 100644 --- a/drivers/char/tpm/tpm-dev.h +++ b/drivers/char/tpm/tpm-dev.h @@ -14,7 +14,7 @@ struct file_priv { struct work_struct timeout_work; struct work_struct async_work; wait_queue_head_t async_wait; - size_t response_length; + ssize_t response_length; bool response_read; bool command_enqueued; |