[PATCH 4/6] crypto/nx-842-{powerpc,pseries}: only load on the appropriate machine type
From: Nishanth Aravamudan <hidden>
Date: 2015-07-02 22:40:53
Also in:
linux-crypto
Subsystem:
crypto api, ibm power 842 compression accelerator, linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Herbert Xu, "David S. Miller", Haren Myneni, Madhavan Srinivasan, Michael Ellerman, Linus Torvalds
While we never would successfully load on the wrong machine type, there is extra output by default regardless of machine type. For instance, on a PowerVM LPAR, we see the following: nx_compress_powernv: loading nx_compress_powernv: no coprocessors found even though those coprocessors could never be found. Similar pseries messages are printed on powernv. Signed-off-by: Nishanth Aravamudan <redacted> --- drivers/crypto/nx/nx-842-powernv.c | 6 ++++++ drivers/crypto/nx/nx-842-pseries.c | 6 ++++++ drivers/crypto/nx/nx-842.h | 1 + 3 files changed, 13 insertions(+)
diff --git a/drivers/crypto/nx/nx-842-powernv.c b/drivers/crypto/nx/nx-842-powernv.c
index 33b3b0abf4ae..6b5e5143c95b 100644
--- a/drivers/crypto/nx/nx-842-powernv.c
+++ b/drivers/crypto/nx/nx-842-powernv.c@@ -594,6 +594,9 @@ static __init int nx842_powernv_init(void) BUILD_BUG_ON(DDE_BUFFER_ALIGN % DDE_BUFFER_SIZE_MULT); BUILD_BUG_ON(DDE_BUFFER_SIZE_MULT % DDE_BUFFER_LAST_MULT); + if (!machine_is(powernv)) + return -ENODEV; + pr_info("loading\n"); for_each_compatible_node(dn, NULL, "ibm,power-nx")
@@ -625,6 +628,9 @@ static void __exit nx842_powernv_exit(void) { struct nx842_coproc *coproc, *n; + if (!machine_is(powernv)) + return; + nx842_platform_driver_unset(&nx842_powernv_driver); list_for_each_entry_safe(coproc, n, &nx842_coprocs, list) {
diff --git a/drivers/crypto/nx/nx-842-pseries.c b/drivers/crypto/nx/nx-842-pseries.c
index b84b0ceeb46e..75a7bfdc160e 100644
--- a/drivers/crypto/nx/nx-842-pseries.c
+++ b/drivers/crypto/nx/nx-842-pseries.c@@ -1091,6 +1091,9 @@ static int __init nx842_pseries_init(void) struct nx842_devdata *new_devdata; int ret; + if (!machine_is(pseries)) + return -ENODEV; + pr_info("Registering IBM Power 842 compression driver\n"); if (!of_find_compatible_node(NULL, NULL, "ibm,compression"))
@@ -1129,6 +1132,9 @@ static void __exit nx842_pseries_exit(void) struct nx842_devdata *old_devdata; unsigned long flags; + if (!machine_is(pseries)) + return; + pr_info("Exiting IBM Power 842 compression driver\n"); nx842_platform_driver_unset(&nx842_pseries_driver); spin_lock_irqsave(&devdata_mutex, flags);
diff --git a/drivers/crypto/nx/nx-842.h b/drivers/crypto/nx/nx-842.h
index ac0ea79d0f8b..ea89c661e476 100644
--- a/drivers/crypto/nx/nx-842.h
+++ b/drivers/crypto/nx/nx-842.h@@ -10,6 +10,7 @@ #include <linux/io.h> #include <linux/mm.h> #include <linux/ratelimit.h> +#include <asm/machdep.h> /* Restrictions on Data Descriptor List (DDL) and Entry (DDE) buffers *
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2.1.4