Improve USB storage performance

Extrems · Extrems · commit 3b43d8ae52d5 · 2026-04-08T19:08:42.000-04:00
diff --git a/libogc/usbstorage.c b/libogc/usbstorage.c
@@ -317,7 +317,7 @@ static s32 __cycle(usbstorage_handle *dev, u8 lun, u8 *buffer, u32 len, u8 *cb,
 		{
 			u32 thisLen = _len > max_size ? max_size : _len;
 
-			if ((u32)_buffer&0x1F || !((u32)_buffer&0x10000000)) {
+			if (!SYS_IsDMAAddress(_buffer, 32) || !SYS_IsDMAAddress(_buffer + thisLen, 1)) {
 				if (write) memcpy(dev->buffer, _buffer, thisLen);
 				retval = __USB_BlkMsgTimeout(dev, ep, thisLen, dev->buffer, usbtimeout);
 				if (!write && retval > 0)

Original file line number	Diff line number	Diff line change
`@@ -317,7 +317,7 @@ static s32 __cycle(usbstorage_handle dev, u8 lun, u8 buffer, u32 len, u8 *cb,`
`317`	`317`	`{`
`318`	`318`	`u32 thisLen = _len > max_size ? max_size : _len;`
`319`	`319`
`320`		`- if ((u32)_buffer&0x1F \|\| !((u32)_buffer&0x10000000)) {`
	`320`	`+ if (!SYS_IsDMAAddress(_buffer, 32) \|\| !SYS_IsDMAAddress(_buffer + thisLen, 1)) {`
`321`	`321`	`if (write) memcpy(dev->buffer, _buffer, thisLen);`
`322`	`322`	`retval = __USB_BlkMsgTimeout(dev, ep, thisLen, dev->buffer, usbtimeout);`
`323`	`323`	`if (!write && retval > 0)`