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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/usb/gadget/function/uvc_configfs.c
..
..
@@ -7,7 +7,7 @@
7
7
  * Copyright (c) 2014 Samsung Electronics Co., Ltd.
8
8
  *		http://www.samsung.com
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9
  *
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- * Author: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
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+ * Author: Andrzej Pietrasiewicz <andrzejtp2010@gmail.com>
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11
  */
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12
 
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 #include <linux/sort.h>
..
..
@@ -1607,10 +1607,6 @@
1607
1607
 	if (ret)							\
1608
1608
 		goto end;						\
1609
1609
 									\
1610
-	if (num > 255) {						\
1611
-		ret = -EINVAL;						\
1612
-		goto end;						\
1613
-	}								\
1614
1610
 	u->desc.aname = num;						\
1615
1611
 	ret = len;							\
1616
1612
 end:									\
..
..
@@ -1804,10 +1800,6 @@
1804
1800
 	if (ret)							\
1805
1801
 		goto end;						\
1806
1802
 									\
1807
-	if (num > 255) {						\
1808
-		ret = -EINVAL;						\
1809
-		goto end;						\
1810
-	}								\
1811
1803
 	u->desc.aname = num;						\
1812
1804
 	ret = len;							\
1813
1805
 end:									\
..
..
@@ -2774,11 +2766,15 @@
2774
2766
 UVCG_OPTS_ATTR(streaming_interval, streaming_interval, 16);
2775
2767
 UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, 3072);
2776
2768
 UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, 15);
2777
-UVCG_OPTS_ATTR(uvc_num_request, uvc_num_request, UVC_MAX_NUM_REQUESTS);
2778
2769
 UVCG_OPTS_ATTR(pm_qos_latency, pm_qos_latency, PM_QOS_LATENCY_ANY);
2770
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
2771
+UVCG_OPTS_ATTR(uvc_num_request, uvc_num_request, 64);
2772
+UVCG_OPTS_ATTR(uvc_zero_copy, uvc_zero_copy, 1);
2773
+#endif
2779
2774
 
2780
2775
 #undef UVCG_OPTS_ATTR
2781
2776
 
2777
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
2782
2778
 static ssize_t f_uvc_opts_device_name_show(struct config_item *item,
2783
2779
 					   char *page)
2784
2780
 {
..
..
@@ -2832,15 +2828,62 @@
2832
2828
 	return ret;
2833
2829
 }
2834
2830
 UVC_ATTR(f_uvc_opts_, device_name, device_name);
2831
+#endif
2832
+
2833
+#define UVCG_OPTS_STRING_ATTR(cname, aname)				\
2834
+static ssize_t f_uvc_opts_string_##cname##_show(struct config_item *item,\
2835
+					 char *page)			\
2836
+{									\
2837
+	struct f_uvc_opts *opts = to_f_uvc_opts(item);			\
2838
+	int result;							\
2839
+									\
2840
+	mutex_lock(&opts->lock);					\
2841
+	result = snprintf(page, sizeof(opts->aname), "%s", opts->aname);\
2842
+	mutex_unlock(&opts->lock);					\
2843
+									\
2844
+	return result;							\
2845
+}									\
2846
+									\
2847
+static ssize_t f_uvc_opts_string_##cname##_store(struct config_item *item,\
2848
+					  const char *page, size_t len)	\
2849
+{									\
2850
+	struct f_uvc_opts *opts = to_f_uvc_opts(item);			\
2851
+	int size = min(sizeof(opts->aname), len + 1);			\
2852
+	int ret = 0;							\
2853
+									\
2854
+	mutex_lock(&opts->lock);					\
2855
+	if (opts->refcnt) {						\
2856
+		ret = -EBUSY;						\
2857
+		goto end;						\
2858
+	}								\
2859
+									\
2860
+	ret = strscpy(opts->aname, page, size);				\
2861
+	if (ret == -E2BIG)						\
2862
+		ret = size - 1;						\
2863
+									\
2864
+end:									\
2865
+	mutex_unlock(&opts->lock);					\
2866
+	return ret;							\
2867
+}									\
2868
+									\
2869
+UVC_ATTR(f_uvc_opts_string_, cname, aname)
2870
+
2871
+UVCG_OPTS_STRING_ATTR(function_name, function_name);
2872
+
2873
+#undef UVCG_OPTS_STRING_ATTR
2835
2874
 
2836
2875
 static struct configfs_attribute *uvc_attrs[] = {
2837
2876
 	&f_uvc_opts_attr_streaming_bulk,
2838
2877
 	&f_uvc_opts_attr_streaming_interval,
2839
2878
 	&f_uvc_opts_attr_streaming_maxpacket,
2840
2879
 	&f_uvc_opts_attr_streaming_maxburst,
2841
-	&f_uvc_opts_attr_uvc_num_request,
2842
2880
 	&f_uvc_opts_attr_pm_qos_latency,
2881
+#if defined(CONFIG_ARCH_ROCKCHIP) && defined(CONFIG_NO_GKI)
2843
2882
 	&f_uvc_opts_attr_device_name,
2883
+	&f_uvc_opts_attr_uvc_num_request,
2884
+	&f_uvc_opts_attr_uvc_zero_copy,
2885
+#endif
2886
+	&f_uvc_opts_string_attr_function_name,
2844
2887
 	NULL,
2845
2888
 };
2846
2889