Merge "mmc: core: Add sysfs entry to print ring buffer" (ee4f380c) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/mmc/core/debugfs.c

+26 −0

Original line number	Diff line number	Diff line
		@@ -32,6 +32,26 @@ module_param(fail_request, charp, 0);
		#endif /* CONFIG_FAIL_MMC_REQUEST */

		/* The debugfs functions are optimized away when CONFIG_DEBUG_FS isn't set. */
		static int mmc_ring_buffer_show(struct seq_file s, void data)
		{
		struct mmc_host *mmc = s->private;

		mmc_dump_trace_buffer(mmc, s);
		return 0;
		}

		static int mmc_ring_buffer_open(struct inode inode, struct file file)
		{
		return single_open(file, mmc_ring_buffer_show, inode->i_private);
		}

		static const struct file_operations mmc_ring_buffer_fops = {
		.open = mmc_ring_buffer_open,
		.read = seq_read,
		.llseek = seq_lseek,
		.release = single_release,
		};

		static int mmc_ios_show(struct seq_file s, void data)
		{
		static const char *vdd_str[] = {
		@@ -374,6 +394,12 @@ void mmc_add_host_debugfs(struct mmc_host *host)
		&mmc_err_state))
		goto err_node;

		#ifdef CONFIG_MMC_RING_BUFFER
		if (!debugfs_create_file("ring_buffer", S_IRUSR,
		root, host, &mmc_ring_buffer_fops))
		goto err_node;
		#endif

		#ifdef CONFIG_MMC_CLKGATE
		if (!debugfs_create_u32("clk_delay", (S_IRUSR \| S_IWUSR),
		root, &host->clk_delay))