From: Antonio Ospite Date: Mon, 16 Feb 2015 17:12:22 +0000 (+0100) Subject: HID: sony: Don't use magic numbers in sixaxis_set_operational_usb() X-Git-Tag: firefly_0821_release~176^2~1996^2~1^9~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a85d67b545e9c1e178ecdb159cfa59a45405c22a;p=firefly-linux-kernel-4.4.55.git HID: sony: Don't use magic numbers in sixaxis_set_operational_usb() Remove the magic numbers used in sixaxis_set_operational_usb(): - use the already defined SIXAXIS_REPORT_0xF2_SIZE; - define and use SIXAXIS_REPORT_0xF5_SIZE; - set the dummy buffer size to accommodate any report that is going to be requested. Signed-off-by: Antonio Ospite Acked-by: Frank Praznik Signed-off-by: Jiri Kosina --- diff --git a/drivers/hid/hid-sony.c b/drivers/hid/hid-sony.c index 4d6376cac0bd..64f2f51e6698 100644 --- a/drivers/hid/hid-sony.c +++ b/drivers/hid/hid-sony.c @@ -803,6 +803,7 @@ union sixaxis_output_report_01 { #define DS4_REPORT_0x11_SIZE 78 #define DS4_REPORT_0x81_SIZE 7 #define SIXAXIS_REPORT_0xF2_SIZE 17 +#define SIXAXIS_REPORT_0xF5_SIZE 8 static spinlock_t sony_dev_list_lock; static LIST_HEAD(sony_device_list); @@ -1131,13 +1132,15 @@ static void sony_input_configured(struct hid_device *hdev, static int sixaxis_set_operational_usb(struct hid_device *hdev) { int ret; - char *buf = kmalloc(18, GFP_KERNEL); + const int buf_size = + max(SIXAXIS_REPORT_0xF2_SIZE, SIXAXIS_REPORT_0xF5_SIZE); + char *buf = kmalloc(buf_size, GFP_KERNEL); if (!buf) return -ENOMEM; - ret = hid_hw_raw_request(hdev, 0xf2, buf, 17, HID_FEATURE_REPORT, - HID_REQ_GET_REPORT); + ret = hid_hw_raw_request(hdev, 0xf2, buf, SIXAXIS_REPORT_0xF2_SIZE, + HID_FEATURE_REPORT, HID_REQ_GET_REPORT); if (ret < 0) { hid_err(hdev, "can't set operational mode: step 1\n"); @@ -1148,8 +1151,8 @@ static int sixaxis_set_operational_usb(struct hid_device *hdev) * Some compatible controllers like the Speedlink Strike FX and * Gasia need another query plus an USB interrupt to get operational. */ - ret = hid_hw_raw_request(hdev, 0xf5, buf, 8, HID_FEATURE_REPORT, - HID_REQ_GET_REPORT); + ret = hid_hw_raw_request(hdev, 0xf5, buf, SIXAXIS_REPORT_0xF5_SIZE, + HID_FEATURE_REPORT, HID_REQ_GET_REPORT); if (ret < 0) { hid_err(hdev, "can't set operational mode: step 2\n");