75 static bool __i915_error_ok(struct drm_i915_error_state_buf *e)  in __i915_error_ok()  argument
78 	if (!e->err && WARN(e->bytes > (e->size - 1), "overflow")) {  in __i915_error_ok()
79 		e->err = -ENOSPC;  in __i915_error_ok()
83 	if (e->bytes == e->size - 1 || e->err)  in __i915_error_ok()
89 static bool __i915_error_seek(struct drm_i915_error_state_buf *e,  in __i915_error_seek()  argument
92 	if (e->pos + len <= e->start) {  in __i915_error_seek()
93 		e->pos += len;  in __i915_error_seek()
98 	if (len >= e->size) {  in __i915_error_seek()
99 		e->err = -EIO;  in __i915_error_seek()
106 static void __i915_error_advance(struct drm_i915_error_state_buf *e,  in __i915_error_advance()  argument
113 	if (e->pos < e->start) {  in __i915_error_advance()
114 		const size_t off = e->start - e->pos;  in __i915_error_advance()
117 		if (off > len || e->bytes) {  in __i915_error_advance()
118 			e->err = -EIO;  in __i915_error_advance()
122 		memmove(e->buf, e->buf + off, len - off);  in __i915_error_advance()
123 		e->bytes = len - off;  in __i915_error_advance()
124 		e->pos = e->start;  in __i915_error_advance()
128 	e->bytes += len;  in __i915_error_advance()
129 	e->pos += len;  in __i915_error_advance()
132 static void i915_error_vprintf(struct drm_i915_error_state_buf *e,  in i915_error_vprintf()  argument
137 	if (!__i915_error_ok(e))  in i915_error_vprintf()
141 	if (e->pos < e->start) {  in i915_error_vprintf()
148 		if (!__i915_error_seek(e, len))  in i915_error_vprintf()
152 	len = vsnprintf(e->buf + e->bytes, e->size - e->bytes, f, args);  in i915_error_vprintf()
153 	if (len >= e->size - e->bytes)  in i915_error_vprintf()
154 		len = e->size - e->bytes - 1;  in i915_error_vprintf()
156 	__i915_error_advance(e, len);  in i915_error_vprintf()
159 static void i915_error_puts(struct drm_i915_error_state_buf *e,  in i915_error_puts()  argument
164 	if (!__i915_error_ok(e))  in i915_error_puts()
170 	if (e->pos < e->start) {  in i915_error_puts()
171 		if (!__i915_error_seek(e, len))  in i915_error_puts()
175 	if (len >= e->size - e->bytes)  in i915_error_puts()
176 		len = e->size - e->bytes - 1;  in i915_error_puts()
177 	memcpy(e->buf + e->bytes, str, len);  in i915_error_puts()
179 	__i915_error_advance(e, len);  in i915_error_puts()
182 #define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)  argument
183 #define err_puts(e, s) i915_error_puts(e, s)  argument
309 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)  in i915_error_printf()  argument
314 	i915_error_vprintf(e, f, args);  in i915_error_printf()