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authorAaron Durbin <adurbin@chromium.org>2017-03-27 17:04:26 -0500
committerAaron Durbin <adurbin@chromium.org>2017-04-03 05:32:21 +0200
commit6ef52cd7519d0166382bb7743de6fd34c6c6436d (patch)
treea4542f08a71ad2ab9eef9cb090e4c05d30c8b964 /src/drivers/spi/tpm/tis.c
parent445c13fb5daf483005ec87670f9937499032c98d (diff)
downloadcoreboot-6ef52cd7519d0166382bb7743de6fd34c6c6436d.tar.xz
drivers/spi/tpm: honor tis_sendrecv() API
The spi tis_sendrecv() implementation was always returning success for all transactions. Correct this by returning -1 on error when tpm2_process_command() returns 0 since that's its current failure return code. BUG=b:36598499 Change-Id: I8bfb5a09198ae4c293330e770271773a185d5061 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19058 Reviewed-by: Furquan Shaikh <furquan@google.com> Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/drivers/spi/tpm/tis.c')
-rw-r--r--src/drivers/spi/tpm/tis.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/drivers/spi/tpm/tis.c b/src/drivers/spi/tpm/tis.c
index d3c727cb27..481c9da1d0 100644
--- a/src/drivers/spi/tpm/tis.c
+++ b/src/drivers/spi/tpm/tis.c
@@ -85,6 +85,11 @@ int tis_sendrecv(const uint8_t *sendbuf, size_t sbuf_size,
uint8_t *recvbuf, size_t *rbuf_len)
{
int len = tpm2_process_command(sendbuf, sbuf_size, recvbuf, *rbuf_len);
+
+ if (len == 0)
+ return -1;
+
*rbuf_len = len;
+
return 0;
}