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linux/drivers/char/tpm
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Alexander Steffen 2edb87931a tpm_tis: Explicitly check for error code 
commit 513253f8c2 upstream.

recv_data either returns the number of received bytes, or a negative value
representing an error code. Adding the return value directly to the total
number of received bytes therefore looks a little weird, since it might add
a negative error code to a sum of bytes.

The following check for size < expected usually makes the function return
ETIME in that case, so it does not cause too many problems in practice. But
to make the code look cleaner and because the caller might still be
interested in the original error code, explicitly check for the presence of
an error code and pass that through.

Cc: stable@vger.kernel.org
Fixes: cb5354253a ("[PATCH] tpm: spacing cleanups 2")
Signed-off-by: Alexander Steffen <Alexander.Steffen@infineon.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-08-03 10:24:14 +02:00
..
eventlog tpm/eventlog: Don't abort tpm_read_log on faulty ACPI address 2023-03-17 08:50:30 +01:00
st33zp24 i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
Kconfig tpm: Add tpm_tis_i2c backend for tpm_tis_core 2022-08-03 23:56:20 +03:00
Makefile tpm: Add tpm_tis_i2c backend for tpm_tis_core 2022-08-03 23:56:20 +03:00
tpm-chip.c tpm: return false from tpm_amd_is_rng_defective on non-x86 platforms 2023-07-23 13:49:31 +02:00
tpm-dev-common.c tpm: Fix error handling in async work 2022-03-08 10:33:17 +02:00
tpm-dev.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm-dev.h tpm: Handle negative priv->response_len in tpm_common_read() 2020-01-08 18:11:09 +02:00
tpm-interface.c tpm: Prevent hwrng from activating during resume 2023-05-30 14:03:16 +01:00
tpm-sysfs.c tpm: Add Upgrade/Reduced mode support for TPM2 modules 2022-01-09 00:18:47 +02:00
tpm.h tpm: Re-enable TPM chip boostrapping non-tpm_tis TPM drivers 2023-05-30 14:03:16 +01:00
tpm1-cmd.c tpm: Add upgrade/reduced mode support for TPM1.2 modules 2022-08-03 23:56:19 +03:00
tpm2-cmd.c tpm: Add check for Failure mode for TPM2 modules 2022-08-03 23:56:20 +03:00
tpm2-space.c tpm: use try_get_ops() in tpm-space.c 2022-03-10 01:47:25 +02:00
tpm_atmel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm_atmel.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm_crb.c tpm: Do not remap from ACPI resources again for Pluton TPM 2023-07-23 13:49:31 +02:00
tpm_ftpm_tee.c tpm/tpm_ftpm_tee: Fix error handling in ftpm_mod_init() 2022-12-31 13:31:54 +01:00
tpm_ftpm_tee.h tpm/tpm_ftpm_tee: A driver for firmware TPM running inside TEE 2019-09-02 17:08:35 +03:00
tpm_i2c_atmel.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
tpm_i2c_infineon.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
tpm_i2c_nuvoton.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
tpm_ibmvtpm.c tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe() 2022-05-23 18:47:49 +03:00
tpm_ibmvtpm.h tpm: ibmvtpm: Avoid error message when process gets signal while waiting 2021-08-23 19:55:42 +03:00
tpm_infineon.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm_nsc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
tpm_ppi.c char: move from strlcpy with unused retval to strscpy 2022-10-05 00:25:56 +03:00
tpm_tis.c tpm, tpm_tis: Avoid cache incoherency in test for interrupts 2023-05-30 14:03:16 +01:00
tpm_tis_core.c tpm_tis: Explicitly check for error code 2023-08-03 10:24:14 +02:00
tpm_tis_core.h tpm, tpm_tis: correct tpm_tis_flags enumeration values 2023-06-09 10:34:23 +02:00
tpm_tis_i2c.c tpm: tis_i2c: Limit write bursts to I2C_SMBUS_BLOCK_MAX (32) bytes 2023-07-23 13:49:31 +02:00
tpm_tis_i2c_cr50.c i2c: Make remove callback return void 2022-08-16 12:46:26 +02:00
tpm_tis_spi.h tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops 2022-05-23 18:47:49 +03:00
tpm_tis_spi_cr50.c tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops 2022-05-23 18:47:49 +03:00
tpm_tis_spi_main.c tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops 2022-05-23 18:47:49 +03:00
tpm_tis_synquacer.c tpm: Remove read16/read32/write32 calls from tpm_tis_phy_ops 2022-05-23 18:47:49 +03:00
tpm_vtpm_proxy.c tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation 2023-07-23 13:49:31 +02:00
tpmrm-dev.c tpm: Unify the mismatching TPM space buffer sizes 2020-07-24 09:26:23 +03:00
xen-tpmfront.c xen/tpmfront: use xenbus_setup_ring() and xenbus_teardown_ring() 2022-05-19 14:21:59 +02:00