linux-kernel - [PATCH v2 1/5] platform/chrome: cros_ec_lpc: Move mec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221101152132.v2.1.I0728421299079b104710c202d5d7095b2674fd8c@changeid>
Date:   Tue,  1 Nov 2022 15:22:06 -0700
From:   Brian Norris <briannorris@...omium.org>
To:     Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>
Cc:     chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Brian Norris <briannorris@...omium.org>
Subject: [PATCH v2 1/5] platform/chrome: cros_ec_lpc: Move mec_init to device probe

Disregarding the weird global state hiding in this cros_ec_lpc_mec_*()
stuff, it belongs in device probe. We shouldn't assume we can access
hardware resources when the device isn't attached to the driver.

Signed-off-by: Brian Norris <briannorris@...omium.org>
---

Changes in v2:
 - drop cros_ec_lpc_mec_destroy() (removed in -next; was done wrong in
   my v1 anyway)

 drivers/platform/chrome/cros_ec_lpc.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/platform/chrome/cros_ec_lpc.c b/drivers/platform/chrome/cros_ec_lpc.c
index 6ef5e5d40ba4..48302183d62e 100644
--- a/drivers/platform/chrome/cros_ec_lpc.c
+++ b/drivers/platform/chrome/cros_ec_lpc.c
@@ -354,6 +354,9 @@ static int cros_ec_lpc_probe(struct platform_device *pdev)
 		return -EBUSY;
 	}
 
+	cros_ec_lpc_mec_init(EC_HOST_CMD_REGION0,
+			     EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE);
+
 	/*
 	 * Read the mapped ID twice, the first one is assuming the
 	 * EC is a Microchip Embedded Controller (MEC) variant, if the
@@ -586,9 +589,6 @@ static int __init cros_ec_lpc_init(void)
 		return -ENODEV;
 	}
 
-	cros_ec_lpc_mec_init(EC_HOST_CMD_REGION0,
-			     EC_LPC_ADDR_MEMMAP + EC_MEMMAP_SIZE);
-
 	/* Register the driver */
 	ret = platform_driver_register(&cros_ec_lpc_driver);
 	if (ret) {
-- 
2.38.1.273.g43a17bfeac-goog