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authorDavid Howells <dhowells@redhat.com>2017-04-04 17:54:30 +0200
committerDavid Howells <dhowells@redhat.com>2017-04-20 13:02:32 +0200
commite992ef5705c1e154acb248869b39e0be4c003a8b (patch)
treea86325050facb5f3ea530e8c8a690dfc3a45d9c9 /sound/isa/cmi8330.c
parentAnnotate hardware config module parameters in sound/drivers/ (diff)
downloadlinux-e992ef5705c1e154acb248869b39e0be4c003a8b.tar.xz
linux-e992ef5705c1e154acb248869b39e0be4c003a8b.zip
Annotate hardware config module parameters in sound/isa/
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 sound/isa/. Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> cc: Jaroslav Kysela <perex@perex.cz> cc: Takashi Iwai <tiwai@suse.com> cc: alsa-devel@alsa-project.org
Diffstat (limited to 'sound/isa/cmi8330.c')
-rw-r--r--sound/isa/cmi8330.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/sound/isa/cmi8330.c b/sound/isa/cmi8330.c
index dfedfd85f205..f64b29ab5cc7 100644
--- a/sound/isa/cmi8330.c
+++ b/sound/isa/cmi8330.c
@@ -95,27 +95,27 @@ module_param_array(isapnp, bool, NULL, 0444);
MODULE_PARM_DESC(isapnp, "PnP detection for specified soundcard.");
#endif
-module_param_array(sbport, long, NULL, 0444);
+module_param_hw_array(sbport, long, ioport, NULL, 0444);
MODULE_PARM_DESC(sbport, "Port # for CMI8330/CMI8329 SB driver.");
-module_param_array(sbirq, int, NULL, 0444);
+module_param_hw_array(sbirq, int, irq, NULL, 0444);
MODULE_PARM_DESC(sbirq, "IRQ # for CMI8330/CMI8329 SB driver.");
-module_param_array(sbdma8, int, NULL, 0444);
+module_param_hw_array(sbdma8, int, dma, NULL, 0444);
MODULE_PARM_DESC(sbdma8, "DMA8 for CMI8330/CMI8329 SB driver.");
-module_param_array(sbdma16, int, NULL, 0444);
+module_param_hw_array(sbdma16, int, dma, NULL, 0444);
MODULE_PARM_DESC(sbdma16, "DMA16 for CMI8330/CMI8329 SB driver.");
-module_param_array(wssport, long, NULL, 0444);
+module_param_hw_array(wssport, long, ioport, NULL, 0444);
MODULE_PARM_DESC(wssport, "Port # for CMI8330/CMI8329 WSS driver.");
-module_param_array(wssirq, int, NULL, 0444);
+module_param_hw_array(wssirq, int, irq, NULL, 0444);
MODULE_PARM_DESC(wssirq, "IRQ # for CMI8330/CMI8329 WSS driver.");
-module_param_array(wssdma, int, NULL, 0444);
+module_param_hw_array(wssdma, int, dma, NULL, 0444);
MODULE_PARM_DESC(wssdma, "DMA for CMI8330/CMI8329 WSS driver.");
-module_param_array(fmport, long, NULL, 0444);
+module_param_hw_array(fmport, long, ioport, NULL, 0444);
MODULE_PARM_DESC(fmport, "FM port # for CMI8330/CMI8329 driver.");
-module_param_array(mpuport, long, NULL, 0444);
+module_param_hw_array(mpuport, long, ioport, NULL, 0444);
MODULE_PARM_DESC(mpuport, "MPU-401 port # for CMI8330/CMI8329 driver.");
-module_param_array(mpuirq, int, NULL, 0444);
+module_param_hw_array(mpuirq, int, irq, NULL, 0444);
MODULE_PARM_DESC(mpuirq, "IRQ # for CMI8330/CMI8329 MPU-401 port.");
#ifdef CONFIG_PNP
static int isa_registered;