diff options
| -rw-r--r-- | drivers/hid/hid-ft260.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/hid/hid-ft260.c b/drivers/hid/hid-ft260.c index 7a9ba984a75a..f43a8406cb9a 100644 --- a/drivers/hid/hid-ft260.c +++ b/drivers/hid/hid-ft260.c @@ -249,7 +249,10 @@ static int ft260_hid_feature_report_get(struct hid_device *hdev, ret = hid_hw_raw_request(hdev, report_id, buf, len, HID_FEATURE_REPORT, HID_REQ_GET_REPORT); - memcpy(data, buf, len); + if (likely(ret == len)) + memcpy(data, buf, len); + else if (ret >= 0) + ret = -EIO; kfree(buf); return ret; } @@ -298,7 +301,7 @@ static int ft260_xfer_status(struct ft260_device *dev) ret = ft260_hid_feature_report_get(hdev, FT260_I2C_STATUS, (u8 *)&report, sizeof(report)); - if (ret < 0) { + if (unlikely(ret < 0)) { hid_err(hdev, "failed to retrieve status: %d\n", ret); return ret; } @@ -724,10 +727,9 @@ static int ft260_get_system_config(struct hid_device *hdev, ret = ft260_hid_feature_report_get(hdev, FT260_SYSTEM_SETTINGS, (u8 *)cfg, len); - if (ret != len) { + if (ret < 0) { hid_err(hdev, "failed to retrieve system status\n"); - if (ret >= 0) - return -EIO; + return ret; } return 0; } @@ -780,8 +782,8 @@ static int ft260_byte_show(struct hid_device *hdev, int id, u8 *cfg, int len, int ret; ret = ft260_hid_feature_report_get(hdev, id, cfg, len); - if (ret != len && ret >= 0) - return -EIO; + if (ret < 0) + return ret; return scnprintf(buf, PAGE_SIZE, "%hi\n", *field); } @@ -792,8 +794,8 @@ static int ft260_word_show(struct hid_device *hdev, int id, u8 *cfg, int len, int ret; ret = ft260_hid_feature_report_get(hdev, id, cfg, len); - if (ret != len && ret >= 0) - return -EIO; + if (ret < 0) + return ret; return scnprintf(buf, PAGE_SIZE, "%hi\n", le16_to_cpu(*field)); } @@ -944,10 +946,8 @@ static int ft260_probe(struct hid_device *hdev, const struct hid_device_id *id) ret = ft260_hid_feature_report_get(hdev, FT260_CHIP_VERSION, (u8 *)&version, sizeof(version)); - if (ret != sizeof(version)) { + if (ret < 0) { hid_err(hdev, "failed to retrieve chip version\n"); - if (ret >= 0) - ret = -EIO; goto err_hid_close; } |