5872633b9d
Adds latest 6.6 patches from the Raspberry Pi repository. These patches were generated from: https://github.com/raspberrypi/linux/commits/rpi-6.6.y/ With the following command: git format-patch -N v6.6.83..HEAD (HEAD -> 08d4e8f52256bd422d8a1f876411603f627d0a82) Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com> (cherry picked from commit 251f76c1c67d62c585d799c38dab31e1385d2ad5)
31 lines
1.0 KiB
Diff
31 lines
1.0 KiB
Diff
From 4d577c42b47dfffda80da995fafd5b16fdb242e2 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Tue, 4 Feb 2025 13:18:45 +0000
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Subject: [PATCH] mailbox: rp1: Don't claim channels in of_xlate
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The of_xlate method saves the calculated event mask in the con_priv
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field. It also rejects subsequent attempt to use that channel because
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the mask is non-zero, which causes a repeated instantiation of a client
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driver to fail.
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The of_xlate method is not meant to be a point of resource acquisition.
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Leave the con_priv initialisation, but drop the test that it was
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previously zero.
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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drivers/mailbox/rp1-mailbox.c | 2 --
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1 file changed, 2 deletions(-)
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--- a/drivers/mailbox/rp1-mailbox.c
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+++ b/drivers/mailbox/rp1-mailbox.c
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@@ -133,8 +133,6 @@ static struct mbox_chan *rp1_mbox_xlate(
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return ERR_PTR(-EINVAL);
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chan = &mbox->chans[doorbell];
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- if (chan->con_priv)
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- return ERR_PTR(-EBUSY);
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chan->con_priv = (void *)(uintptr_t)(1 << doorbell);
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