diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3542-drm-amdkfd-updated-read-to-set-errno-to-eagain.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3542-drm-amdkfd-updated-read-to-set-errno-to-eagain.patch | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3542-drm-amdkfd-updated-read-to-set-errno-to-eagain.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3542-drm-amdkfd-updated-read-to-set-errno-to-eagain.patch new file mode 100644 index 00000000..27c34ee4 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3542-drm-amdkfd-updated-read-to-set-errno-to-eagain.patch @@ -0,0 +1,35 @@ +From 7c5a4b52de95b3b49f5cc40a9a3b7ddb0e3d063e Mon Sep 17 00:00:00 2001 +From: Jonathan Kim <jonathan.kim@amd.com> +Date: Mon, 12 Aug 2019 11:47:28 -0400 +Subject: [PATCH 3542/4256] drm/amdkfd: updated read to set errno to eagain + +User space requries -1 and errno set to EAGAIN on kfifo_to_user +failure or 0 bytes copy. + +Change-Id: I34985ff641b21568e12bf5534bd39d1d5d744364 +Signed-off-by: Jonathan Kim <jonathan.kim@amd.com> +--- + drivers/gpu/drm/amd/amdkfd/kfd_debug_events.c | 7 ++++--- + 1 file changed, 4 insertions(+), 3 deletions(-) + +diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_debug_events.c b/drivers/gpu/drm/amd/amdkfd/kfd_debug_events.c +index 210cccdeed81..df42b1dd8b4b 100644 +--- a/drivers/gpu/drm/amd/amdkfd/kfd_debug_events.c ++++ b/drivers/gpu/drm/amd/amdkfd/kfd_debug_events.c +@@ -70,9 +70,10 @@ static ssize_t kfd_dbg_ev_read(struct file *filep, char __user *user, + + ret = kfifo_to_user(&dpd->fifo, user, size, &copied); + +- if (ret) { +- pr_debug("KFD DEBUG EVENT: Failed to read poll fd (%i)\n", ret); +- return ret; ++ if (ret || !copied) { ++ pr_debug("KFD DEBUG EVENT: Failed to read poll fd (%i) (%i)\n", ++ ret, copied); ++ return ret ? ret : -EAGAIN; + } + + return copied; +-- +2.17.1 + |