habanalabs/gaudi: retry loading TPC f/w on -EINTR

[ Upstream commit 98e8781f008372057bd5cb059ca6b507371e473d ]

If loading the firmware file for the TPC f/w was interrupted, try
to do it again, up to 5 times.

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/misc/habanalabs/gaudi/gaudi.c b/drivers/misc/habanalabs/gaudi/gaudi.c
index 36f0bb7..ed1bd41 100644 (file)
--- a/drivers/misc/habanalabs/gaudi/gaudi.c
+++ b/drivers/misc/habanalabs/gaudi/gaudi.c
@@ -754,11 +754,17 @@ static int gaudi_init_tpc_mem(struct hl_device *hdev)
        size_t fw_size;
        void *cpu_addr;
        dma_addr_t dma_handle;
-       int rc;
+       int rc, count = 5;
 
+again:
        rc = request_firmware(&fw, GAUDI_TPC_FW_FILE, hdev->dev);
+       if (rc == -EINTR && count-- > 0) {
+               msleep(50);
+               goto again;
+       }
+
        if (rc) {
-               dev_err(hdev->dev, "Firmware file %s is not found!\n",
+               dev_err(hdev->dev, "Failed to load firmware file %s\n",
                                GAUDI_TPC_FW_FILE);
                goto out;
        }