Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On Thu, Nov 05, 2015 at 05:59:36PM +0530, Vignesh R wrote: > On 11/04/2015 08:09 PM, Mark Brown wrote: > > It's a bit worrying that this doesn't sync with the message queue except > > via the mutex: this means that we might be out of order with respect to > > any asynchronous transfers that are

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On 11/04/2015 08:09 PM, Mark Brown wrote: > On Tue, Nov 03, 2015 at 03:36:10PM +0530, Vignesh R wrote: > >> +} >> +mutex_lock(>mmap_lock_mutex); >> +ret = master->spi_mtd_mmap_read(spi, from, len, retlen, buf, >> +read_opcode, addr_width, >> +

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On 11/04/2015 08:09 PM, Mark Brown wrote: > On Tue, Nov 03, 2015 at 03:36:10PM +0530, Vignesh R wrote: > >> +} >> +mutex_lock(>mmap_lock_mutex); >> +ret = master->spi_mtd_mmap_read(spi, from, len, retlen, buf, >> +read_opcode, addr_width, >> +

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On Thu, Nov 05, 2015 at 05:59:36PM +0530, Vignesh R wrote: > On 11/04/2015 08:09 PM, Mark Brown wrote: > > It's a bit worrying that this doesn't sync with the message queue except > > via the mutex: this means that we might be out of order with respect to > > any asynchronous transfers that are

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On Tue, Nov 03, 2015 at 03:36:10PM +0530, Vignesh R wrote: > + } > + mutex_lock(>mmap_lock_mutex); > + ret = master->spi_mtd_mmap_read(spi, from, len, retlen, buf, > + read_opcode, addr_width, > + dummy_bytes); >

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On Tue, Nov 03, 2015 at 03:36:10PM +0530, Vignesh R wrote: > + } > + mutex_lock(>mmap_lock_mutex); > + ret = master->spi_mtd_mmap_read(spi, from, len, retlen, buf, > + read_opcode, addr_width, > + dummy_bytes); >

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

Hi, On 11/03/2015 04:49 PM, Michal Suchanek wrote: > On 3 November 2015 at 11:06, Vignesh R wrote: >> In addition to providing direct access to SPI bus, some spi controller >> hardwares (like ti-qspi) provide special memory mapped port >> to accesses SPI flash devices in order to increase read

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On 3 November 2015 at 11:06, Vignesh R wrote: > In addition to providing direct access to SPI bus, some spi controller > hardwares (like ti-qspi) provide special memory mapped port > to accesses SPI flash devices in order to increase read performance. > This means the controller can automatically

[PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

In addition to providing direct access to SPI bus, some spi controller hardwares (like ti-qspi) provide special memory mapped port to accesses SPI flash devices in order to increase read performance. This means the controller can automatically send the SPI signals required to read data from the

[PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

In addition to providing direct access to SPI bus, some spi controller hardwares (like ti-qspi) provide special memory mapped port to accesses SPI flash devices in order to increase read performance. This means the controller can automatically send the SPI signals required to read data from the

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

On 3 November 2015 at 11:06, Vignesh R wrote: > In addition to providing direct access to SPI bus, some spi controller > hardwares (like ti-qspi) provide special memory mapped port > to accesses SPI flash devices in order to increase read performance. > This means the controller

Re: [PATCH v2 1/5] spi: introduce mmap read support for spi flash devices

Hi, On 11/03/2015 04:49 PM, Michal Suchanek wrote: > On 3 November 2015 at 11:06, Vignesh R wrote: >> In addition to providing direct access to SPI bus, some spi controller >> hardwares (like ti-qspi) provide special memory mapped port >> to accesses SPI flash devices in order