From: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
Some programs require HDIO_GETGEO work, which requires we implement
getgeo. Based off of the work done to the NVMe driver in this commit:
4cc09e2dc4cb NVMe: Add getgeo to block ops
Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx>
---
drivers/block/prd.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/block/prd.c b/drivers/block/prd.c
index 4cfc4f8..cc0aabf 100644
--- a/drivers/block/prd.c
+++ b/drivers/block/prd.c
@@ -19,6 +19,7 @@
#include <linux/bio.h>
#include <linux/blkdev.h>
#include <linux/fs.h>
+#include <linux/hdreg.h>
#include <linux/highmem.h>
#include <linux/init.h>
#include <linux/major.h>
@@ -52,6 +53,15 @@ struct prd_device {
size_t size;
};
+static int prd_getgeo(struct block_device *bd, struct hd_geometry *geo)
+{
+ /* some standard values */
+ geo->heads = 1 << 6;
+ geo->sectors = 1 << 5;
+ geo->cylinders = get_capacity(bd->bd_disk) >> 11;
+ return 0;
+}
+
/*
* direct translation from (prd,sector) => void*
* We do not require that sector be page aligned.
@@ -213,6 +223,7 @@ static const struct block_device_operations prd_fops = {
.owner = THIS_MODULE,
.rw_page = prd_rw_page,
.direct_access = prd_direct_access,
+ .getgeo = prd_getgeo,
};
/* Kernel module stuff */
--
1.9.3
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