gpu: nvgpu: Use new kmem API functions (pci.c)

Really just delete the usage of kasprintf() since that must be
paired with a kfree(). Since the kasprintf() doesn't use the
nvgpu kmem machinery (and is Linux specific) instead use a small
buffer statically allocated on the stack.

Bug 1799159
Bug 1823380

Change-Id: Ic26f39da401df926024c67e8ff5d979f683a6d3e
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1318311
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 7 deletions

diff --git a/drivers/gpu/nvgpu/pci.c b/drivers/gpu/nvgpu/pci.c
index 0ed621ce..1e66b7c9 100644
--- a/drivers/gpu/nvgpu/pci.c
+++ b/drivers/gpu/nvgpu/pci.c
@@ -337,7 +337,7 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
         struct gk20a_platform *platform = NULL;
         struct gk20a *g;
         int err;
-        char *nodefmt;
+        char nodefmt[64];
 
         /* make sure driver_data is a sane index */
         if (pent->driver_data >= sizeof(nvgpu_pci_device) /
@@ -410,17 +410,13 @@ static int nvgpu_pci_probe(struct pci_dev *pdev,
                 return -EINVAL;
         }
 
-        nodefmt = kasprintf(GFP_KERNEL, PCI_INTERFACE_NAME, dev_name(&pdev->dev));
-        if (!nodefmt)
-                return -ENOMEM;
+        snprintf(nodefmt, sizeof(nodefmt),
+                 PCI_INTERFACE_NAME, dev_name(&pdev->dev));
 
         err = nvgpu_probe(g, "gpu_pci", nodefmt, &nvgpu_pci_class);
         if (err)
                 return err;
 
-        kfree(nodefmt);
-        nodefmt = NULL;
-
         err = nvgpu_pci_pm_init(&pdev->dev);
         if (err) {
                 gk20a_err(&pdev->dev, "pm init failed");