From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org, BALATON Zoltan <balaton@eik.bme.hu>
Cc: "Corey Minyard" <cminyard@mvista.com>,
"Peter Maydell" <peter.maydell@linaro.org>,
"Alistair Francis" <alistair@alistair23.me>,
"Philippe Mathieu-Daudé" <f4bug@amsat.org>,
qemu-ppc@nongnu.org, "Frederic Konrad" <konrad@adacore.com>,
"David Gibson" <david@gibson.dropbear.id.au>
Subject: [RFC PATCH v2 3/3] hw/misc/auxbus: Fix MOT/classic I2C mode
Date: Tue, 23 Jun 2020 08:31:23 +0200 [thread overview]
Message-ID: <20200623063123.20776-4-f4bug@amsat.org> (raw)
In-Reply-To: <20200623063123.20776-1-f4bug@amsat.org>
Since its introduction in commit 6fc7f77fd2 i2c_start_transfer()
uses incorrectly the direction of the transfer. Fix it now.
Fixes: 6fc7f77fd2 ("introduce aux-bus")
Reported-by: BALATON Zoltan <balaton@eik.bme.hu>
Suggested-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
RFC because untested (probably never was anyway)
Cc: Frederic Konrad <konrad@adacore.com>
Cc: Alistair Francis <alistair@alistair23.me>
Cc: Peter Maydell <peter.maydell@linaro.org>
---
hw/misc/auxbus.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/misc/auxbus.c b/hw/misc/auxbus.c
index cef0d0d6d0..dc4a5dd10d 100644
--- a/hw/misc/auxbus.c
+++ b/hw/misc/auxbus.c
@@ -141,7 +141,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
i2c_end_transfer(i2c_bus);
}
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
ret = AUX_I2C_NACK;
break;
}
@@ -172,7 +172,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
/*
* No transactions started..
*/
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
break;
}
} else if ((address != bus->last_i2c_address) ||
@@ -181,7 +181,7 @@ AUXReply aux_request(AUXBus *bus, AUXCommand cmd, uint32_t address,
* Transaction started but we need to restart..
*/
i2c_end_transfer(i2c_bus);
- if (i2c_start_transfer(i2c_bus, address, is_write)) {
+ if (i2c_start_transfer(i2c_bus, address, !is_write)) {
break;
}
}
--
2.21.3
next prev parent reply other threads:[~2020-06-23 6:35 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 6:31 [PATCH v2 0/3] i2c: Match parameters of i2c_start_transfer and i2c_send_recv Philippe Mathieu-Daudé
2020-06-23 6:31 ` [PATCH v2 1/3] " Philippe Mathieu-Daudé
2020-06-23 6:31 ` [PATCH v2 2/3] i2c: Make i2c_start_transfer() direction argument a boolean Philippe Mathieu-Daudé
2020-06-23 6:31 ` Philippe Mathieu-Daudé [this message]
2020-06-23 11:06 ` [RFC PATCH v2 3/3] hw/misc/auxbus: Fix MOT/classic I2C mode BALATON Zoltan
2020-07-04 16:54 ` Philippe Mathieu-Daudé
2020-07-04 16:54 ` [PATCH v2 0/3] i2c: Match parameters of i2c_start_transfer and i2c_send_recv Philippe Mathieu-Daudé
2021-06-12 19:33 ` BALATON Zoltan
2021-06-14 9:56 ` Philippe Mathieu-Daudé
2021-06-14 10:02 ` BALATON Zoltan
2021-06-14 16:48 ` Philippe Mathieu-Daudé
2021-06-14 19:34 ` Corey Minyard
2021-06-16 15:09 ` Philippe Mathieu-Daudé
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