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Date:   Sat, 15 Jan 2022 16:42:02 +0000
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
From:   Alfasys <alfred@alfasys.se>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Damian Hobson-Garcia <dhobsong@igel.co.jp>
Reply-To: Alfasys <alfred@alfasys.se>
Subject: [PATCH 001/001] UIO: allow binding uio_dmem_genirq to devices using command line options
Message-ID: <qFul607Amxy21SnrHljzWlk1zF1aanKgSpEIH0--hvj9t9wRzQR5xx80eFgl_2I6pppi8NNFp0TTHwkQw0uQD0Xl-8vth8-KOsbfwrLIHNg=@alfasys.se>
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Add an option to bind the uio_dmem_genirq driver to a given device
using command line options.
Make uio_dmem_genirq match uio_pdrv_genirq functionality added in
commit 05c3e0bb5629 ("UIO: allow binding uio_pdrv_genirq.c to devices =


using command line option")

CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Damian Hobson-Garcia <dhobsong@igel.co.jp>
Signed-off-by: Alfred Patriksson <alfred@alfasys.se>

---

git diff c9e6606c7fe92 #(tag: v5.16-rc8)
diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index 6b5cfa5b0673..7f6c9b594dd4 100644
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -317,10 +317,13 @@ static const struct dev_pm_ops uio_dmem_genirq_dev_p=
m_ops =3D {
 };
 =


 #ifdef CONFIG_OF
-static const struct of_device_id uio_of_genirq_match[] =3D {
-       { /* empty for now */ },
+static struct of_device_id uio_of_genirq_match[] =3D {
+       { /* This is filled with module_parm */ },
+       { /* Sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, uio_of_genirq_match);
+module_param_string(of_id, uio_of_genirq_match[0].compatible, 128, 0);
+MODULE_PARM_DESC(of_id, "Openfirmware id of the device to be handled by u=
io");
 #endif
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