From: Alexander Shiyan <shc_work@mail.ru>
To: barebox@lists.infradead.org
Subject: [PATCH] commands: spi: Fix spi read procedure
Date: Sat, 13 Jul 2013 09:31:40 +0400 [thread overview]
Message-ID: <1373693500-28123-1-git-send-email-shc_work@mail.ru> (raw)
Buffer for RX is set incorrectly.
barebox@Phytec phyCORE-i.MX27:/ spi -r 128 -v
device config
bus_num = 0
max_speed_hz = 1000000
chip_select = 0
mode = 0x0
bits_per_word = 8
wrote 0 bytes
00000000:
read 128 bytes
00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
unable to handle paging request at address 0x4dffd3d0
pc : [<a7f05ec4>] lr : [<a7f05ebc>]
sp : a7fff890 ip : a7fff860 fp : a7f68820
r10: a6ffe9bc r9 : 00000000 r8 : 00000001
r7 : a6ffe9ec r6 : a6f00000 r5 : a6ffe9ec r4 : a6ffe9e4
r3 : a6ffe9e4 r2 : a6ffe9e5 r1 : a6ffe9e4 r0 : 4dffd3cc
Flags: nZCv IRQs off FIQs off Mode SVC_32
...
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
---
commands/spi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/commands/spi.c b/commands/spi.c
index 2f6b430..79fc539 100644
--- a/commands/spi.c
+++ b/commands/spi.c
@@ -81,7 +81,7 @@ static int do_spi(int argc, char *argv[])
}
tx_buf = xmalloc(count);
- rx_buf = xmalloc(count);
+ rx_buf = xmalloc(read);
for (i = 0; i < count; i++)
tx_buf[i] = (u8) simple_strtol(argv[optind + i], NULL, 16);
--
1.8.1.5
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next reply other threads:[~2013-07-13 5:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-13 5:31 Alexander Shiyan [this message]
2013-07-15 9:05 ` Sascha Hauer
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