dmaengine: dw-edma: Move struct dentry variable from static definition into dw_edma struct

Move struct dentry variable from static definition (dw-edma-v0-debugfs.c)
into dw_edma struct (dw-edma-core.h)

Also the variable was renamed from base_dir to debugfs.

Signed-off-by: Gustavo Pimentel <[e-mail]>
Link: https://lore.kernel.org/r/07c1167b[e-mail]
Signed-off-by: Vinod Koul <[e-mail]>

drivers/dma/dw-edma/dw-edma-core.c

···
 	dma_async_device_unregister(&dw->rd_edma);
 
 	/* Turn debugfs off */
-	dw_edma_v0_core_debugfs_off();
+	dw_edma_v0_core_debugfs_off(chip);
 
 	return 0;
 }

drivers/dma/dw-edma/dw-edma-core.h

···
 	const struct dw_edma_core_ops	*ops;
 
 	raw_spinlock_t			lock;		/* Only for legacy */
+#ifdef CONFIG_DEBUG_FS
+	struct dentry			*debugfs;
+#endif /* CONFIG_DEBUG_FS */
 };
 
 struct dw_edma_sg {

drivers/dma/dw-edma/dw-edma-v0-core.c

···
 	dw_edma_v0_debugfs_on(chip);
 }
 
-void dw_edma_v0_core_debugfs_off(void)
+void dw_edma_v0_core_debugfs_off(struct dw_edma_chip *chip)
 {
-	dw_edma_v0_debugfs_off();
+	dw_edma_v0_debugfs_off(chip);
 }

drivers/dma/dw-edma/dw-edma-v0-core.h

···
 int dw_edma_v0_core_device_config(struct dw_edma_chan *chan);
 /* eDMA debug fs callbacks */
 void dw_edma_v0_core_debugfs_on(struct dw_edma_chip *chip);
-void dw_edma_v0_core_debugfs_off(void);
+void dw_edma_v0_core_debugfs_off(struct dw_edma_chip *chip);
 
 #endif /* _DW_EDMA_V0_CORE_H */

drivers/dma/dw-edma/dw-edma-v0-debugfs.c

···
 #define CHANNEL_STR				"channel"
 #define REGISTERS_STR				"registers"
 
-static struct dentry				*base_dir;
 static struct dw_edma				*dw;
 static struct dw_edma_v0_regs			__iomem *regs;
 
···
 	struct dentry *regs_dir;
 	int nr_entries;
 
-	regs_dir = debugfs_create_dir(REGISTERS_STR, base_dir);
+	regs_dir = debugfs_create_dir(REGISTERS_STR, dw->debugfs);
 	if (!regs_dir)
 		return;
 
···
 	if (!regs)
 		return;
 
-	base_dir = debugfs_create_dir(dw->name, NULL);
-	if (!base_dir)
+	dw->debugfs = debugfs_create_dir(dw->name, NULL);
+	if (!dw->debugfs)
 		return;
 
-	debugfs_create_u32("mf", 0444, base_dir, &dw->mf);
-	debugfs_create_u16("wr_ch_cnt", 0444, base_dir, &dw->wr_ch_cnt);
-	debugfs_create_u16("rd_ch_cnt", 0444, base_dir, &dw->rd_ch_cnt);
+	debugfs_create_u32("mf", 0444, dw->debugfs, &dw->mf);
+	debugfs_create_u16("wr_ch_cnt", 0444, dw->debugfs, &dw->wr_ch_cnt);
+	debugfs_create_u16("rd_ch_cnt", 0444, dw->debugfs, &dw->rd_ch_cnt);
 
 	dw_edma_debugfs_regs();
 }
 
-void dw_edma_v0_debugfs_off(void)
+void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip)
 {
-	debugfs_remove_recursive(base_dir);
+	dw = chip->dw;
+	if (!dw)
+		return;
+
+	debugfs_remove_recursive(dw->debugfs);
+	dw->debugfs = NULL;
 }

drivers/dma/dw-edma/dw-edma-v0-debugfs.h

···
 
 #ifdef CONFIG_DEBUG_FS
 void dw_edma_v0_debugfs_on(struct dw_edma_chip *chip);
-void dw_edma_v0_debugfs_off(void);
+void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip);
 #else
 static inline void dw_edma_v0_debugfs_on(struct dw_edma_chip *chip)
 {
 }
 
-static inline void dw_edma_v0_debugfs_off(void)
+static inline void dw_edma_v0_debugfs_off(struct dw_edma_chip *chip)
 {
 }
 #endif /* CONFIG_DEBUG_FS */