Commit b658e5d8 authored by David Howells's avatar David Howells

Annotate hardware config module parameters in drivers/net/hamradio/

When the kernel is running in secure boot mode, we lock down the kernel to
prevent userspace from modifying the running kernel image.  Whilst this
includes prohibiting access to things like /dev/mem, it must also prevent
access by means of configuring driver modules in such a way as to cause a
device to access or modify the kernel image.

To this end, annotate module_param* statements that refer to hardware
configuration and indicate for future reference what type of parameter they
specify.  The parameter parser in the core sees this information and can
skip such parameters with an error message if the kernel is locked down.
The module initialisation then runs as normal, but just sees whatever the
default values for those parameters is.

Note that we do still need to do the module initialisation because some
drivers have viable defaults set in case parameters aren't specified and
some drivers support automatic configuration (e.g. PNP or PCI) in addition
to manually coded parameters.

This patch annotates drivers in drivers/net/hamradio/.
Suggested-by: default avatarAlan Cox <gnomes@lxorguk.ukuu.org.uk>
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
cc: Thomas Sailer <t.sailer@alumni.ethz.ch>
cc: Joerg Reuter <jreuter@yaina.de>
cc: linux-hams@vger.kernel.org
cc: netdev@vger.kernel.org
parent df298408
...@@ -1176,7 +1176,7 @@ static int iobase[NR_PORTS] = { 0x378, }; ...@@ -1176,7 +1176,7 @@ static int iobase[NR_PORTS] = { 0x378, };
module_param_array(mode, charp, NULL, 0); module_param_array(mode, charp, NULL, 0);
MODULE_PARM_DESC(mode, "baycom operating mode"); MODULE_PARM_DESC(mode, "baycom operating mode");
module_param_array(iobase, int, NULL, 0); module_param_hw_array(iobase, int, ioport, NULL, 0);
MODULE_PARM_DESC(iobase, "baycom io base address"); MODULE_PARM_DESC(iobase, "baycom io base address");
MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu"); MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
......
...@@ -481,7 +481,7 @@ static int iobase[NR_PORTS] = { 0x378, }; ...@@ -481,7 +481,7 @@ static int iobase[NR_PORTS] = { 0x378, };
module_param_array(mode, charp, NULL, 0); module_param_array(mode, charp, NULL, 0);
MODULE_PARM_DESC(mode, "baycom operating mode; eg. par96 or picpar"); MODULE_PARM_DESC(mode, "baycom operating mode; eg. par96 or picpar");
module_param_array(iobase, int, NULL, 0); module_param_hw_array(iobase, int, ioport, NULL, 0);
MODULE_PARM_DESC(iobase, "baycom io base address"); MODULE_PARM_DESC(iobase, "baycom io base address");
MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu"); MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
......
...@@ -614,9 +614,9 @@ static int baud[NR_PORTS] = { [0 ... NR_PORTS-1] = 1200 }; ...@@ -614,9 +614,9 @@ static int baud[NR_PORTS] = { [0 ... NR_PORTS-1] = 1200 };
module_param_array(mode, charp, NULL, 0); module_param_array(mode, charp, NULL, 0);
MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD"); MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD");
module_param_array(iobase, int, NULL, 0); module_param_hw_array(iobase, int, ioport, NULL, 0);
MODULE_PARM_DESC(iobase, "baycom io base address"); MODULE_PARM_DESC(iobase, "baycom io base address");
module_param_array(irq, int, NULL, 0); module_param_hw_array(irq, int, irq, NULL, 0);
MODULE_PARM_DESC(irq, "baycom irq number"); MODULE_PARM_DESC(irq, "baycom irq number");
module_param_array(baud, int, NULL, 0); module_param_array(baud, int, NULL, 0);
MODULE_PARM_DESC(baud, "baycom baud rate (300 to 4800)"); MODULE_PARM_DESC(baud, "baycom baud rate (300 to 4800)");
......
...@@ -642,9 +642,9 @@ static int irq[NR_PORTS] = { 4, }; ...@@ -642,9 +642,9 @@ static int irq[NR_PORTS] = { 4, };
module_param_array(mode, charp, NULL, 0); module_param_array(mode, charp, NULL, 0);
MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD"); MODULE_PARM_DESC(mode, "baycom operating mode; * for software DCD");
module_param_array(iobase, int, NULL, 0); module_param_hw_array(iobase, int, ioport, NULL, 0);
MODULE_PARM_DESC(iobase, "baycom io base address"); MODULE_PARM_DESC(iobase, "baycom io base address");
module_param_array(irq, int, NULL, 0); module_param_hw_array(irq, int, irq, NULL, 0);
MODULE_PARM_DESC(irq, "baycom irq number"); MODULE_PARM_DESC(irq, "baycom irq number");
MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu"); MODULE_AUTHOR("Thomas M. Sailer, sailer@ife.ee.ethz.ch, hb9jnx@hb9w.che.eu");
......
...@@ -274,7 +274,7 @@ static unsigned long rand; ...@@ -274,7 +274,7 @@ static unsigned long rand;
MODULE_AUTHOR("Klaus Kudielka"); MODULE_AUTHOR("Klaus Kudielka");
MODULE_DESCRIPTION("Driver for high-speed SCC boards"); MODULE_DESCRIPTION("Driver for high-speed SCC boards");
module_param_array(io, int, NULL, 0); module_param_hw_array(io, int, ioport, NULL, 0);
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
static void __exit dmascc_exit(void) static void __exit dmascc_exit(void)
......
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