From 88307654af35fd550324fc1d8504db0da7225950 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 8 Apr 2020 16:57:25 -0600 Subject: [PATCH] tpm: Don't cleanup unless an error happens At present the cleanup() method is called on every transfer. It should only be called on failing transfers. Fix this and tidy up the error handling a little. Signed-off-by: Simon Glass Reviewed-by: Bin Meng --- drivers/tpm/tpm-uclass.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/tpm/tpm-uclass.c b/drivers/tpm/tpm-uclass.c index 1b11c93194..71d5807006 100644 --- a/drivers/tpm/tpm-uclass.c +++ b/drivers/tpm/tpm-uclass.c @@ -72,7 +72,7 @@ int tpm_xfer(struct udevice *dev, const uint8_t *sendbuf, size_t send_size, struct tpm_ops *ops = tpm_get_ops(dev); ulong start, stop; uint count, ordinal; - int ret, ret2; + int ret, ret2 = 0; if (ops->xfer) return ops->xfer(dev, sendbuf, send_size, recvbuf, recv_size); @@ -120,9 +120,16 @@ int tpm_xfer(struct udevice *dev, const uint8_t *sendbuf, size_t send_size, } } while (ret); - ret2 = ops->cleanup ? ops->cleanup(dev) : 0; + if (ret) { + if (ops->cleanup) { + ret2 = ops->cleanup(dev); + if (ret2) + return log_msg_ret("cleanup", ret2); + } + return log_msg_ret("xfer", ret); + } - return ret2 ? ret2 : ret; + return 0; } UCLASS_DRIVER(tpm) = { -- 2.39.5