This is a note to let you know that I've just added the patch titled
tpm: missing tpm_chip_put in tpm_get_random()
to the 3.16-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tpm-missing-tpm_chip_put-in-tpm_get_random.patch
and it can be found in the queue-3.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3e14d83ef94a5806a865b85b513b4e891923c19b Mon Sep 17 00:00:00 2001
From: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
Date: Fri, 9 May 2014 14:23:10 +0300
Subject: tpm: missing tpm_chip_put in tpm_get_random()
From: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
commit 3e14d83ef94a5806a865b85b513b4e891923c19b upstream.
Regression in 41ab999c. Call to tpm_chip_put is missing. This
will cause TPM device driver not to unload if tmp_get_random()
is called.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Huewe <peterhuewe@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/char/tpm/tpm-interface.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/drivers/char/tpm/tpm-interface.c
+++ b/drivers/char/tpm/tpm-interface.c
@@ -991,13 +991,13 @@ int tpm_get_random(u32 chip_num, u8 *out
int err, total = 0, retries = 5;
u8 *dest = out;
+ if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
+ return -EINVAL;
+
chip = tpm_chip_find_get(chip_num);
if (chip == NULL)
return -ENODEV;
- if (!out || !num_bytes || max > TPM_MAX_RNG_DATA)
- return -EINVAL;
-
do {
tpm_cmd.header.in = tpm_getrandom_header;
tpm_cmd.params.getrandom_in.num_bytes = cpu_to_be32(num_bytes);
@@ -1016,6 +1016,7 @@ int tpm_get_random(u32 chip_num, u8 *out
num_bytes -= recd;
} while (retries-- && total < max);
+ tpm_chip_put(chip);
return total ? total : -EIO;
}
EXPORT_SYMBOL_GPL(tpm_get_random);
Patches currently in stable-queue which might be from jarkko.sakkinen@xxxxxxxxxxxxxxx are
queue-3.16/tpm-missing-tpm_chip_put-in-tpm_get_random.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html