Re: [PATCHv2 3/3] fpga_mgr: Add streaming support through the new driver_data API

From: Li, Yi
Date: Wed May 24 2017 - 09:25:36 EST




On 5/23/2017 10:25 AM, Alan Tull wrote:
On Tue, May 23, 2017 at 10:21 AM, Alan Tull <atull@xxxxxxxxxx> wrote:

+
+ mgr->state = FPGA_MGR_STATE_FIRMWARE_REQ;
+ while (length > 0) {
This could be "do { ... } while ((params.fw_size >= FIRMWARE_CHUNK_SZ)
&& (length > 0));" since that's what it's really doing.
Yes, this is better, thanks.

+ ret = driver_data_request_sync(image_name, &req_params,
dev);
+ if (ret) {
+ dev_err(dev, "Error reading firmware %d\n", ret);
+ mgr->state = FPGA_MGR_STATE_FIRMWARE_REQ_ERR;
Also need: kfree(buf);

+ return ret;
Or this could be a break instead of a return.

Thanks Alan, will fix it.
+ }
+
+ length -= params.fw_size;
+ params.offset += params.fw_size;
+ if (params.fw_size < SZ_4K)
+ break;
+ }
+
+ kfree(buf);
Please skip a line before return.

+ return ret;
+}
+EXPORT_SYMBOL_GPL(fpga_mgr_firmware_stream);