diff options
Diffstat (limited to 'meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0117-Copy-raw-PECI-response-to-user-space-on-timeout.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0117-Copy-raw-PECI-response-to-user-space-on-timeout.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0117-Copy-raw-PECI-response-to-user-space-on-timeout.patch b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0117-Copy-raw-PECI-response-to-user-space-on-timeout.patch new file mode 100644 index 000000000..f019b43ab --- /dev/null +++ b/meta-openbmc-mods/meta-common/recipes-kernel/linux/linux-aspeed/0117-Copy-raw-PECI-response-to-user-space-on-timeout.patch @@ -0,0 +1,54 @@ +From c63c2466e3e8f61dd61fd98f4265af2e13ac9bac Mon Sep 17 00:00:00 2001 +From: "Jason M. Bills" <jason.m.bills@linux.intel.com> +Date: Mon, 6 Jul 2020 13:59:52 -0700 +Subject: [PATCH] Copy raw PECI response to user-space on timeout + +When a raw PECI command times out, the response is not copied +to user-space, so the timeout completion code is lost. + +This follows the default flow and also copies the response to +user-space on timeout to give the user a valid completion code. + +Tested: +Forced PECI timeout and confirmed that the raw PECI command +returns a valid completion code to the user. + +Signed-off-by: Jason M. Bills <jason.m.bills@linux.intel.com> +--- + drivers/peci/peci-dev.c | 12 +++++++++++- + 1 file changed, 11 insertions(+), 1 deletion(-) + +diff --git a/drivers/peci/peci-dev.c b/drivers/peci/peci-dev.c +index e0fe09467a80..c574d13213af 100644 +--- a/drivers/peci/peci-dev.c ++++ b/drivers/peci/peci-dev.c +@@ -138,8 +138,13 @@ static long peci_dev_ioctl(struct file *file, uint iocmd, ulong arg) + xmsg->tx_len = uxmsg.tx_len; + xmsg->rx_len = uxmsg.rx_len; + ++ /* ++ * Send the command and copy the results back to user space on ++ * either success or timeout to provide the completion code to ++ * the caller. ++ */ + ret = peci_command(peci_dev->adapter, cmd, xmsg); +- if (!ret && xmsg->rx_len && ++ if ((!ret || ret == -ETIMEDOUT) && xmsg->rx_len && + copy_to_user((__u8 __user *)uxmsg.rx_buf, xmsg->rx_buf, + xmsg->rx_len)) + ret = -EFAULT; +@@ -153,6 +158,11 @@ static long peci_dev_ioctl(struct file *file, uint iocmd, ulong arg) + break; + } + ++ /* ++ * Send the command and copy the results back to user space on ++ * either success or timeout to provide the completion code to ++ * the caller. ++ */ + ret = peci_command(peci_dev->adapter, cmd, msg); + if ((!ret || ret == -ETIMEDOUT) && + copy_to_user(umsg, msg, msg_len)) +-- +2.17.1 + |