drm/xe: Fix arg to pci_iomap()

Commit 2d8865b27724 ("drm/xe: Move BAR definitions to dedicated file")
moved the BAR definition to the header, but replaced the wrong arg in
the pci_iomap() function - the last arg is actuall the length, not the
BAR. Luckily GTTMMADR_BAR == 0, so it still works. Fix the argument
to avoid confusion.

Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240906032507.2952859-1-lucas.demarchi@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>

diff --git a/drivers/gpu/drm/xe/xe_mmio.c b/drivers/gpu/drm/xe/xe_mmio.c
index 3fd462fda6255c545581fe21d3f02566ebc70ff3..4aae30880bc61fcf6b5096e127bcb37aafdd28a1 100644 (file)
--- a/drivers/gpu/drm/xe/xe_mmio.c
+++ b/drivers/gpu/drm/xe/xe_mmio.c
@@ -157,15 +157,14 @@ int xe_mmio_init(struct xe_device *xe)
 {
        struct xe_tile *root_tile = xe_device_get_root_tile(xe);
        struct pci_dev *pdev = to_pci_dev(xe->drm.dev);
-       const int mmio_bar = 0;
 
        /*
         * Map the entire BAR.
         * The first 16MB of the BAR, belong to the root tile, and include:
         * registers (0-4MB), reserved space (4MB-8MB) and GGTT (8MB-16MB).
         */
-       xe->mmio.size = pci_resource_len(pdev, mmio_bar);
-       xe->mmio.regs = pci_iomap(pdev, mmio_bar, GTTMMADR_BAR);
+       xe->mmio.size = pci_resource_len(pdev, GTTMMADR_BAR);
+       xe->mmio.regs = pci_iomap(pdev, GTTMMADR_BAR, 0);
        if (xe->mmio.regs == NULL) {
                drm_err(&xe->drm, "failed to map registers\n");
                return -EIO;