From: Kylene Jo Hall Date: Fri, 24 Jun 2005 05:02:10 +0000 (-0700) Subject: [PATCH] tpm: improve output in sysfs files when the TPM fails X-Git-Tag: firefly_0821_release~42711^2~391 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=34d6e07570ef74b965131452a862b13dfa779188;p=firefly-linux-kernel-4.4.55.git [PATCH] tpm: improve output in sysfs files when the TPM fails Since after reconsideration this is more debug output than an error (the TPM is operating correctly given the current state) I have changed the statements to dbg rather than err. Also this patch corrects a memory leak if the error path is taken in the tpm_show_pubek function. Signed-off-by: Kylene Hall Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/drivers/char/tpm/tpm.c b/drivers/char/tpm/tpm.c index 785dce67942f..5c843c9bf819 100644 --- a/drivers/char/tpm/tpm.c +++ b/drivers/char/tpm/tpm.c @@ -147,7 +147,7 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, memcpy(data, cap_pcr, sizeof(cap_pcr)); if ((len = tpm_transmit(chip, data, sizeof(data))) < CAP_PCR_RESULT_SIZE) { - dev_err(&chip->pci_dev->dev, "A TPM error (%d) occurred " + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred " "attempting to determine the number of PCRS\n", be32_to_cpu(*((__be32 *) (data + 6)))); return 0; @@ -161,7 +161,7 @@ ssize_t tpm_show_pcrs(struct device *dev, struct device_attribute *attr, memcpy(data + 10, &index, 4); if ((len = tpm_transmit(chip, data, sizeof(data))) < READ_PCR_RESULT_SIZE){ - dev_err(&chip->pci_dev->dev, "A TPM error (%d) occurred" + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred" " attempting to read PCR %d of %d\n", be32_to_cpu(*((__be32 *) (data + 6))), i, num_pcrs); goto out; @@ -205,10 +205,11 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, if ((len = tpm_transmit(chip, data, READ_PUBEK_RESULT_SIZE)) < READ_PUBEK_RESULT_SIZE) { - dev_err(&chip->pci_dev->dev, "A TPM error (%d) occurred " + dev_dbg(&chip->pci_dev->dev, "A TPM error (%d) occurred " "attempting to read the PUBEK\n", be32_to_cpu(*((__be32 *) (data + 6)))); - return 0; + rc = 0; + goto out; } /* @@ -240,6 +241,7 @@ ssize_t tpm_show_pubek(struct device *dev, struct device_attribute *attr, str += sprintf(str, "\n"); } rc = str - buf; +out: kfree(data); return rc; }