add dts config

hc

2023-12-06 08f87f769b595151be1afeff53e144f543faa614

 kernel/drivers/usb/host/ohci-hcd.c
..
..
@@ -16,7 +16,7 @@
16
16
  * OHCI is the main "non-Intel/VIA" standard for USB 1.1 host controller
17
17
  * interfaces (though some non-x86 Intel chips use it).  It supports
18
18
  * smarter hardware than UHCI.  A download link for the spec available
19
- * through the http://www.usb.org website.
19
+ * through the https://www.usb.org website.
20
20
  *
21
21
  * This file is licenced under the GPL.
22
22
  */
..
..
@@ -40,6 +40,7 @@
40
40
 #include <linux/dmapool.h>
41
41
 #include <linux/workqueue.h>
42
42
 #include <linux/debugfs.h>
43
+#include <linux/genalloc.h>
43
44
 
44
45
 #include <asm/io.h>
45
46
 #include <asm/irq.h>
..
..
@@ -384,7 +385,7 @@
384
385
 			ed_free (ohci, ed);
385
386
 			break;
386
387
 		}
387
-		/* fall through */
388
+		fallthrough;
388
389
 	default:
389
390
 		/* caller was supposed to have unlinked any requests;
390
391
 		 * that's not our job.  can't recover; must leak ed.
..
..
@@ -456,7 +457,7 @@
456
457
 	struct usb_hcd *hcd = ohci_to_hcd(ohci);
457
458
 
458
459
 	/* Accept arbitrarily long scatter-gather lists */
459
-	if (!(hcd->driver->flags & HCD_LOCAL_MEM))
460
+	if (!hcd->localmem_pool)
460
461
 		hcd->self.sg_tablesize = ~0;
461
462
 
462
463
 	if (distrust_firmware)
..
..
@@ -514,8 +515,15 @@
514
515
 	timer_setup(&ohci->io_watchdog, io_watchdog_func, 0);
515
516
 	ohci->prev_frame_no = IO_WATCHDOG_OFF;
516
517
 
517
-	ohci->hcca = dma_alloc_coherent (hcd->self.controller,
518
-			sizeof(*ohci->hcca), &ohci->hcca_dma, GFP_KERNEL);
518
+	if (hcd->localmem_pool)
519
+		ohci->hcca = gen_pool_dma_alloc_align(hcd->localmem_pool,
520
+						sizeof(*ohci->hcca),
521
+						&ohci->hcca_dma, 256);
522
+	else
523
+		ohci->hcca = dma_alloc_coherent(hcd->self.controller,
524
+						sizeof(*ohci->hcca),
525
+						&ohci->hcca_dma,
526
+						GFP_KERNEL);
519
527
 	if (!ohci->hcca)
520
528
 		return -ENOMEM;
521
529
 
..
..
@@ -1003,9 +1011,14 @@
1003
1011
 	remove_debug_files (ohci);
1004
1012
 	ohci_mem_cleanup (ohci);
1005
1013
 	if (ohci->hcca) {
1006
-		dma_free_coherent (hcd->self.controller,
1007
-				sizeof *ohci->hcca,
1008
-				ohci->hcca, ohci->hcca_dma);
1014
+		if (hcd->localmem_pool)
1015
+			gen_pool_free(hcd->localmem_pool,
1016
+				      (unsigned long)ohci->hcca,
1017
+				      sizeof(*ohci->hcca));
1018
+		else
1019
+			dma_free_coherent(hcd->self.controller,
1020
+					  sizeof(*ohci->hcca),
1021
+					  ohci->hcca, ohci->hcca_dma);
1009
1022
 		ohci->hcca = NULL;
1010
1023
 		ohci->hcca_dma = 0;
1011
1024
 	}
..
..
@@ -1042,7 +1055,7 @@
1042
1055
 			ed->ed_next = ohci->ed_rm_list;
1043
1056
 			ed->ed_prev = NULL;
1044
1057
 			ohci->ed_rm_list = ed;
1045
-			/* FALLTHROUGH */
1058
+			fallthrough;
1046
1059
 		case ED_UNLINK:
1047
1060
 			break;
1048
1061
 		default:
..
..
@@ -1178,7 +1191,7 @@
1178
1191
 	 * generic hardware linkage
1179
1192
 	*/
1180
1193
 	.irq =                  ohci_irq,
1181
-	.flags =                HCD_MEMORY | HCD_USB11,
1194
+	.flags =                HCD_MEMORY | HCD_DMA | HCD_USB11,
1182
1195
 
1183
1196
 	/*
1184
1197
 	* basic lifecycle operations