From: Lars-Peter Clausen <redacted>
Date: Thu, 5 Jul 2012 19:38:36 +0000 (+0200)
Subject: sr: fx2lafw: Free transfers in reverse order
X-Git-Tag: dsupstream~873
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=e7d087bf0e35ff97abae8bdd0c50e400c87b4b4d;p=libsigrok.git

sr: fx2lafw: Free transfers in reverse order

Free the USB transfers in the reverse order of which they were submitted. This
will avoid that while transfer 0 is cancelledd transfer 1 is started by the
host controller, and so on.

Reported-by: Peter Stuge <redacted>
Signed-off-by: Lars-Peter Clausen <redacted>
---

diff --git a/hardware/fx2lafw/fx2lafw.c b/hardware/fx2lafw/fx2lafw.c
index be84761a..334a1109 100644
--- a/hardware/fx2lafw/fx2lafw.c
+++ b/hardware/fx2lafw/fx2lafw.c
@@ -662,11 +662,11 @@ static int receive_data(int fd, int revents, void *cb_data)
 
 static void abort_acquisition(struct context *ctx)
 {
-	unsigned int i;
+	int i;
 
 	ctx->num_samples = -1;
 
-	for (i = 0; i < ctx->num_transfers; i++) {
+	for (i = ctx->num_transfers - 1; i >= 0; i--) {
 		if (ctx->transfers[i])
 			libusb_cancel_transfer(ctx->transfers[i]);
 	}